33
HIGHLIGHTS OF PRESCRIBING INFORMATION These highlights do not include all the information needed to use XELJANZ safely and effectively. See full prescribing information for XELJANZ. XELJANZ ® (tofacitinib) tablets for oral administration Initial U.S. Approval: 2012 WARNING: SERIOUS INFECTIONS AND MALIGNANCY See full prescribing information for complete Boxed Warning. Serious infections leading to hospitalization or death, including tuberculosis and bacterial, invasive fungal, viral, and other opportunistic infections, have occurred in patients receiving XELJANZ. (5.1) If a serious infection develops, interrupt XELJANZ until the infection is controlled. (5.1) Prior to starting XELJANZ, perform a test for latent tuberculosis; if it is positive, start treatment for tuberculosis prior to starting XELJANZ. (5.1) Monitor all patients for active tuberculosis during treatment, even if the initial latent tuberculosis test is negative. (5.1) Lymphoma and other malignancies have been observed in patients treated with XELJANZ. Epstein Barr Virus- associated post- transplant lymphoproliferative disorder has been observed at an increased rate in renal transplant patients treated with XELJANZ and concomitant immunosuppressive medications. (5.2) ---------------------------INDICATIONS AND USAGE---------------------------- XELJANZ, an inhibitor of Janus kinases (JAKs), is indicated for the treatment of adult patients with moderately to severely active rheumatoid arthritis who have had an inadequate response or intolerance to methotrexate. It may be used as monotherapy or in combination with methotrexate or other nonbiologic disease-modifying antirheumatic drugs (DMARDs). XELJANZ should not be used in combination with biologic DMARDs or potent immunosuppressants such as azathioprine and cyclosporine. (1.1) ------------------------DOSAGE AND ADMINISTRATION---------------------- Rheumatoid Arthritis The recommended dose of XELJANZ is 5 mg twice daily. ------------------------DOSAGE FORMS AND STRENGTHS------------- Tablets: 5 mg (3) -------------------------------CONTRAINDICATIONS----------------------------- None (4) ------------------------WARNINGS AND PRECAUTIONS----------------------- Serious Infections – Do not administer XELJANZ during an active infection, including localized infections. If a serious infection develops, interrupt XELJANZ until the infection is controlled. (5.1) Lymphomas and other malignancies have been reported in patients treated with XELJANZ. (5.2) Gastrointestinal Perforations – Use with caution in patients that may be at increased risk. (5.3) Laboratory monitoring –Recommended due to potential changes in lymphocytes, neutrophils, hemoglobin, liver enzymes and lipids. (5.4) Immunizations –Live vaccines should not be given concurrently with XELJANZ. (5. 5) Severe hepatic impairment–Not recommended (5.6) ------------------------------ADVERSE REACTIONS------------------------------- The most commonly reported adverse reactions during the first 3 months in controlled clinical trials (occurring in greater than or equal to 2% of patients treated with XELJANZ monotherapy or in combination with DMARDs) were upper respiratory tract infections, headache, diarrhea and nasopharyngitis. (6.1) To report SUSPECTED ADVERSE REACTIONS, contact Pfizer, Inc at 1-800-438-1985 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch. ---------------------------------DRUG INTERACTIONS---------------------------- Potent inhibitors of Cytochrome P450 3A4 (CYP3A4) (e.g., ketoconazole): Reduce dose to 5 mg once daily. (2.1) One or more concomitant medications that result in both moderate inhibition of CYP3A4 and potent inhibition of CYP2C19 (e.g., fluconazole): Reduce dose to 5 mg once daily. (2.1) Potent CYP inducers (e.g., rifampin): May result in loss of or reduced clinical response. (2.2) ------------------------USE IN SPECIFIC POPULATIONS----------------------- Moderate and severe renal impairment and moderate hepatic impairment: Reduce dose to 5 mg once daily. (8.6, 8.7) See 17 for PATIENT COUNSELING INFORMATION and Medication Guide Revised: 11/2012 FULL PRESCRIBING INFORMATION: CONTENTS* 1 INDICATIONS AND USAGE 1.1 Rheumatoid Arthritis 2 DOSAGE AND ADMINISTRATION 2.1 Rheumatoid Arthritis 2.2 General Considerations for Administration 2.3 Dosage Modifications 3 DOSAGE FORMS AND STRENGTHS 4 CONTRAINDICATIONS 5 WARNINGS AND PRECAUTIONS 5.1 Serious Infections 5.2 Malignancy and Lymphoproliferative Disorder 5.3 Gastrointestinal Perforations 5.4 Laboratory Parameters 5.5 Vaccinations 5.6 Hepatic Impairment 6 ADVERSE REACTIONS 6.1 Clinical Trial Experience 7 DRUG INTERACTIONS 7.1 Potent CYP3A4 Inhibitors 7.2 Moderate CYP3A4 and Potent CYP2C19 Inhibitors 7.3 Potent CYP3A4 Inducers 7.4 Immunosuppressive Drugs 8 USE IN SPECIFIC POPULATIONS 8.1 Pregnancy 8.3 Nursing Mothers 8.4 Pediatric Use 8.5 Geriatric Use 8.6 Hepatic Impairment 8.7 Renal Impairment 10 OVERDOSAGE 11 DESCRIPTION 12 CLINICAL PHARMACOLOGY 12.1 Mechanism of Action 12.2 Pharmacodynamics 12.3 Pharmacokinetics 13 NONCLINICAL TOXICOLOGY 13.1 Carcinogenesis, Mutagenesis, Impairment of Fertility 14 CLINICAL STUDIES 16 HOW SUPPLIED/STORAGE AND HANDLING 17 PATIENT COUNSELING INFORMATION *Sections or subsections omitted from the Full Prescribing Information are not listed. Reference ID: 3213422

Reference ID: 3213422 · • with chronic or recurrent infection • who have been exposed to tuberculosis • with a history of a serious or an opportunistic infection • who

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HIGHLIGHTS OF PRESCRIBING INFORMATION These highlights do not include all the information needed to use XELJANZ safely and effectively See full prescribing information for XELJANZ

XELJANZ reg (tofacitinib) tablets for oral administration

Initial US Approval 2012

WARNING SERIOUS INFECTIONS AND MALIGNANCY

See full prescribing information for complete Boxed Warning

Serious infections leading to hospitalization or death including tuberculosis and bacterial invasive fungal viral and other opportunistic infections have occurred in patients receiving XELJANZ (51)

If a serious infection develops interrupt XELJANZ until the infection is controlled (51)

Prior to starting XELJANZ perform a test for latent tuberculosis if it is positive start treatment for tuberculosis prior to starting XELJANZ (51)

Monitor all patients for active tuberculosis during treatment even if the initial latent tuberculosis test is negative (51)

Lymphoma and other malignancies have been observed in patients treated with XELJANZ Epstein Barr Virus- associated post-transplant lymphoproliferative disorder has been observed at an increased rate in renal transplant patients treated with XELJANZ and concomitant immunosuppressive medications (52)

---------------------------INDICATIONS AND USAGE---------------------------- XELJANZ an inhibitor of Janus kinases (JAKs) is indicated for the

treatment of adult patients with moderately to severely active rheumatoid arthritis who have had an inadequate response or intolerance to methotrexate It may be used as monotherapy or in combination with methotrexate or other nonbiologic disease-modifying antirheumatic drugs (DMARDs)

XELJANZ should not be used in combination with biologic DMARDs or potent immunosuppressants such as azathioprine and cyclosporine (11)

------------------------DOSAGE AND ADMINISTRATION---------------------- Rheumatoid Arthritis

The recommended dose of XELJANZ is 5 mg twice daily

------------------------DOSAGE FORMS AND STRENGTHS-------------

Tablets 5 mg (3)

-------------------------------CONTRAINDICATIONS----------------------------- None (4) ------------------------WARNINGS AND PRECAUTIONS----------------------- Serious Infections ndash Do not administer XELJANZ during an active

infection including localized infections If a serious infection develops interrupt XELJANZ until the infection is controlled (51)

Lymphomas and other malignancies have been reported in patients treated with XELJANZ (52)

Gastrointestinal Perforations ndash Use with caution in patients that may be at increased risk (53)

Laboratory monitoring ndashRecommended due to potential changes in lymphocytes neutrophils hemoglobin liver enzymes and lipids (54)

Immunizations ndashLive vaccines should not be given concurrently with XELJANZ (5 5)

Severe hepatic impairmentndashNot recommended (56)

------------------------------ADVERSE REACTIONS-------------------------------

The most commonly reported adverse reactions during the first 3 months in controlled clinical trials (occurring in greater than or equal to 2 of patients treated with XELJANZ monotherapy or in combination with DMARDs) were upper respiratory tract infections headache diarrhea and nasopharyngitis (61)

To report SUSPECTED ADVERSE REACTIONS contact Pfizer Inc at 1-800-438-1985 or FDA at 1-800-FDA-1088 or wwwfdagovmedwatch

---------------------------------DRUG INTERACTIONS---------------------------- Potent inhibitors of Cytochrome P450 3A4 (CYP3A4) (eg

ketoconazole) Reduce dose to 5 mg once daily (21) One or more concomitant medications that result in both moderate

inhibition of CYP3A4 and potent inhibition of CYP2C19 (eg fluconazole) Reduce dose to 5 mg once daily (21)

Potent CYP inducers (eg rifampin) May result in loss of or reduced clinical response (22)

------------------------USE IN SPECIFIC POPULATIONS----------------------- Moderate and severe renal impairment and moderate hepatic impairment Reduce dose to 5 mg once daily (86 87)

See 17 for PATIENT COUNSELING INFORMATION and Medication Guide

Revised 112012

FULL PRESCRIBING INFORMATION CONTENTS

1 INDICATIONS AND USAGE 11 Rheumatoid Arthritis

2 DOSAGE AND ADMINISTRATION 21 Rheumatoid Arthritis

22 General Considerations for Administration 23 Dosage Modifications

3 DOSAGE FORMS AND STRENGTHS 4 CONTRAINDICATIONS 5 WARNINGS AND PRECAUTIONS

51 Serious Infections 52 Malignancy and Lymphoproliferative Disorder 53 Gastrointestinal Perforations 54 Laboratory Parameters 55 Vaccinations 56 Hepatic Impairment

6 ADVERSE REACTIONS 61 Clinical Trial Experience

7 DRUG INTERACTIONS 71 Potent CYP3A4 Inhibitors 72 Moderate CYP3A4 and Potent CYP2C19 Inhibitors 73 Potent CYP3A4 Inducers 74 Immunosuppressive Drugs

8 USE IN SPECIFIC POPULATIONS 81 Pregnancy 83 Nursing Mothers 84 Pediatric Use 85 Geriatric Use 86 Hepatic Impairment 87 Renal Impairment

10 OVERDOSAGE 11 DESCRIPTION 12 CLINICAL PHARMACOLOGY

121 Mechanism of Action 122 Pharmacodynamics 123 Pharmacokinetics

13 NONCLINICAL TOXICOLOGY 131 Carcinogenesis Mutagenesis Impairment of Fertility

14 CLINICAL STUDIES 16 HOW SUPPLIEDSTORAGE AND HANDLING 17 PATIENT COUNSELING INFORMATION

Sections or subsections omitted from the Full Prescribing Information are not listed

Reference ID 3213422

FULL PRESCRIBING INFORMATION

WARNING SERIOUS INFECTIONS AND MALIGNANCY

SERIOUS INFECTIONS Patients treated with XELJANZ are at increased risk for developing serious infections that may lead to hospitalization or death [see Warnings and Precautions (51) and Adverse Reactions (61)] Most patients who developed these infections were taking concomitant immunosuppressants such as methotrexate or corticosteroids

If a serious infection develops interrupt XELJANZ until the infection is controlled

Reported infections include

bull Active tuberculosis which may present with pulmonary or extrapulmonary disease Patients should be tested for latent tuberculosis before XELJANZ use and during therapy Treatment for latent infection should be initiated prior to XELJANZ use

bull Invasive fungal infections including cryptococcosis and pneumocystosis Patients with invasive fungal infections may present with disseminated rather than localized disease

bull Bacterial viral and other infections due to opportunistic pathogens

The risks and benefits of treatment with XELJANZ should be carefully considered prior to initiating therapy in patients with chronic or recurrent infection

Patients should be closely monitored for the development of signs and symptoms of infection during and after treatment with XELJANZ including the possible development of tuberculosis in patients who tested negative for latent tuberculosis infection prior to initiating therapy [see Warnings and Precautions (51)]

MALIGNANCIES Lymphoma and other malignancies have been observed in patients treated with XELJANZ Epstein Barr Virus- associated post-transplant lymphoproliferative disorder has been observed at an increased rate in renal transplant patients treated with XELJANZ and concomitant immunosuppressive medications [see Warnings and Precautions (52)]

1 INDICATIONS AND USAGE

11 Rheumatoid Arthritis XELJANZ (tofacitinib) is indicated for the treatment of adult patients with moderately to

severely active rheumatoid arthritis who have had an inadequate response or intolerance to methotrexate It may be used as monotherapy or in combination with methotrexate or other nonbiologic disease-modifying antirheumatic drugs (DMARDs)

XELJANZ should not be used in combination with biologic DMARDs or with potent immunosuppressants such as azathioprine and cyclosporine

2

Reference ID 3213422

2 DOSAGE AND ADMINISTRATION XELJANZ is given orally with or without food

21 Rheumatoid Arthritis XELJANZ may be used as monotherapy or in combination with methotrexate or other nonbiologic disease modifying antirheumatic drugs (DMARDs) The recommended dose of XELJANZ is 5 mg twice daily Dose interruption is recommended for management of lymphopenia neutropenia and anemia

[see Dosage and Administration (23) Warnings and Precautions (54) and Adverse Reactions (61)]

XELJANZ dosage should be reduced to 5 mg once daily in patients with moderate or severe renal insufficiency with moderate hepatic impairment receiving potent inhibitors of Cytochrome P450 3A4 (CYP3A4) (eg ketoconazole) receiving one or more concomitant medications that result in both moderate inhibition of

CYP3A4 and potent inhibition of CYP2C19 (eg fluconazole)

22 General Considerations for Administration XELJANZ should not be used in patients with severe hepatic impairment It is recommended that XELJANZ not be initiated in patients with a lymphocyte count less

than 500 cellsmm3 an absolute neutrophil count (ANC) less than 1000 cellsmm3 or who have hemoglobin levels less than 9 gdL

Coadministration of XELJANZ with potent inducers of CYP3A4 (eg rifampin) may result in loss of or reduced clinical response to XELJANZ

23 Dosage Modifications XELJANZ treatment should be interrupted if a patient develops a serious infection until the infection is controlled

Table 1 Dose Adjustments for Lymphopenia Low Lymphocyte Count [see Warnings and Precautions (54)]

Lab Value (cellsmm3)

Recommendation

Lymphocyte count greater than or equal to 500

Maintain dose

Lymphocyte count less than 500

(Confirmed by repeat testing)

Discontinue XELJANZ

3

Reference ID 3213422

Table 2 Dose Adjustments for Neutropenia Low ANC [see Warnings and Precautions (54)]

Lab Value (cellsmm3)

Recommendation

ANC greater than 1000 Maintain dose

ANC 500-1000 For persistent decreases in this range interrupt dosing until ANC is greater than 1000

When ANC is greater than 1000 resume XELJANZ 5 mg twice daily ANC less than 500

(Confirmed by repeat testing)

Discontinue XELJANZ

Table 3 Dose Adjustments for Anemia Low Hemoglobin Value [see Warnings and Precautions (54)]

Lab Value (gdL)

Recommendation

Less than or equal to 2 gdL decrease and greater than or equal to 90 gdL

Maintain dose

Greater than 2 gdL decrease or less than 80 gdL

(Confirmed by repeat testing)

Interrupt the administration of XELJANZ until hemoglobin values have normalized

3 DOSAGE FORMS AND STRENGTHS XELJANZ is provided as 5 mg tofacitinib (equivalent to 8 mg tofacitinib citrate) tablets White round immediate-release film-coated tablets debossed with ldquoPfizerrdquo on one side and ldquoJKI 5rdquo on the other side

4 CONTRAINDICATIONS None

5 WARNINGS AND PRECAUTIONS

51 Serious Infections Serious and sometimes fatal infections due to bacterial mycobacterial invasive fungal viral or other opportunistic pathogens have been reported in rheumatoid arthritis patients receiving XELJANZ The most common serious infections reported with XELJANZ included pneumonia cellulitis herpes zoster and urinary tract infection [see Adverse Reactions (61)] Among opportunistic infections tuberculosis and other mycobacterial infections cryptococcus esophageal candidiasis pneumocystosis multidermatomal herpes zoster cytomegalovirus and BK virus were reported with XELJANZ Some patients have presented with disseminated rather than localized disease and were often taking concomitant immunomodulating agents such as methotrexate or corticosteroids

Other serious infections that were not reported in clinical studies may also occur (eg histoplasmosis coccidioidomycosis and listeriosis)

4

Reference ID 3213422

XELJANZ should not be initiated in patients with an active infection including localized infections The risks and benefits of treatment should be considered prior to initiating XELJANZ in patients bull with chronic or recurrent infection bull who have been exposed to tuberculosis bull with a history of a serious or an opportunistic infection bull who have resided or traveled in areas of endemic tuberculosis or endemic mycoses or bull with underlying conditions that may predispose them to infection

Patients should be closely monitored for the development of signs and symptoms of infection during and after treatment with XELJANZ XELJANZ should be interrupted if a patient develops a serious infection an opportunistic infection or sepsis A patient who develops a new infection during treatment with XELJANZ should undergo prompt and complete diagnostic testing appropriate for an immunocompromised patient appropriate antimicrobial therapy should be initiated and the patient should be closely monitored

Tuberculosis Patients should be evaluated and tested for latent or active infection prior to administration of XELJANZ

Anti-tuberculosis therapy should also be considered prior to administration of XELJANZ in patients with a past history of latent or active tuberculosis in whom an adequate course of treatment cannot be confirmed and for patients with a negative test for latent tuberculosis but who have risk factors for tuberculosis infection Consultation with a physician with expertise in the treatment of tuberculosis is recommended to aid in the decision about whether initiating antishytuberculosis therapy is appropriate for an individual patient

Patients should be closely monitored for the development of signs and symptoms of tuberculosis including patients who tested negative for latent tuberculosis infection prior to initiating therapy

Patients with latent tuberculosis should be treated with standard antimycobacterial therapy before administering XELJANZ

Viral Reactivation Viral reactivation including cases of herpes virus reactivation (eg herpes zoster) were observed in clinical studies with XELJANZ The impact of XELJANZ on chronic viral hepatitis reactivation is unknown Patients who screened positive for hepatitis B or C were excluded from clinical trials

52 Malignancy and Lymphoproliferative Disorder Consider the risks and benefits of XELJANZ treatment prior to initiating therapy in patients with a known malignancy other than a successfully treated non-melanoma skin cancer (NMSC) or when considering continuing XELJANZ in patients who develop a malignancy Malignancies were observed in clinical studies of XELJANZ [see Adverse Reactions (61)]

5

Reference ID 3213422

In the seven controlled rheumatoid arthritis clinical studies 11 solid cancers and one lymphoma were diagnosed in 3328 patients receiving XELJANZ with or without DMARD compared to 0 solid cancers and 0 lymphomas in 809 patients in the placebo with or without DMARD group during the first 12 months of exposure Lymphomas and solid cancers have also been observed in the long-term extension studies in rheumatoid arthritis patients treated with XELJANZ

In Phase 2B controlled dose-ranging trials in de-novo renal transplant patients all of whom received induction therapy with basiliximab high dose corticosteroids and mycophenolic acid products Epstein Barr Virus-associated post-transplant lymphoproliferative disorder was observed in 5 out of 218 patients treated with XELJANZ (23) compared to 0 out of 111 patients treated with cyclosporine

53 Gastrointestinal Perforations Events of gastrointestinal perforation have been reported in clinical studies with XELJANZ in rheumatoid arthritis patients although the role of JAK inhibition in these events is not known

XELJANZ should be used with caution in patients who may be at increased risk for gastrointestinal perforation (eg patients with a history of diverticulitis) Patients presenting with new onset abdominal symptoms should be evaluated promptly for early identification of gastrointestinal perforation [see Adverse Reactions (61)]

54 Laboratory Parameters

Lymphocytes Treatment with XELJANZ was associated with initial lymphocytosis at one month of exposure followed by a gradual decrease in mean lymphocyte counts below the baseline of approximately 10 during 12 months of therapy Lymphocyte counts less than 500 cellsmm3 were associated with an increased incidence of treated and serious infections

Avoid initiation of XELJANZ treatment in patients with a low lymphocyte count (ie less than 500 cellsmm3) In patients who develop a confirmed absolute lymphocyte count less than 500 cellsmm3 treatment with XELJANZ is not recommended

Monitor lymphocyte counts at baseline and every 3 months thereafter For recommended modifications based on lymphocyte counts see Dosage and Administration (23)

Neutrophils Treatment with XELJANZ was associated with an increased incidence of neutropenia (less than 2000 cellsmm3) compared to placebo

Avoid initiation of XELJANZ treatment in patients with a low neutrophil count (ie ANC less than 1000 cellsmm3) For patients who develop a persistent ANC of 500-1000 cellsmm3 interrupt XELJANZ dosing until ANC is greater than or equal to 1000 cellsmm3 In patients who develop an ANC less than 500 cellsmm3 treatment with XELJANZ is not recommended

6

Reference ID 3213422

Monitor neutrophil counts at baseline and after 4-8 weeks of treatment and every 3 months thereafter For recommended modifications based on ANC results see Dosage and Administration (23)

Hemoglobin Avoid initiation of XELJANZ treatment in patients with a low hemoglobin level (ie less than 9 gdL) Treatment with XELJANZ should be interrupted in patients who develop hemoglobin levels less than 8 gdL or whose hemoglobin level drops greater than 2 gdL on treatment

Monitor hemoglobin at baseline and after 4-8 weeks of treatment and every 3 months thereafter For recommended modifications based on hemoglobin results see Dosage and Administration (23)

Liver Enzymes Treatment with XELJANZ was associated with an increased incidence of liver enzyme elevation compared to placebo Most of these abnormalities occurred in studies with background DMARD (primarily methotrexate) therapy

Routine monitoring of liver tests and prompt investigation of the causes of liver enzyme elevations is recommended to identify potential cases of drug-induced liver injury If drug-induced liver injury is suspected the administration of XELJANZ should be interrupted until this diagnosis has been excluded

Lipids Treatment with XELJANZ was associated with increases in lipid parameters including total cholesterol low-density lipoprotein (LDL) cholesterol and high-density lipoprotein (HDL) cholesterol Maximum effects were generally observed within 6 weeks The effect of these lipid parameter elevations on cardiovascular morbidity and mortality has not been determined

Assessment of lipid parameters should be performed approximately 4-8 weeks following initiation of XELJANZ therapy

Manage patients according to clinical guidelines [eg National Cholesterol Educational Program (NCEP)] for the management of hyperlipidemia

55 Vaccinations No data are available on the response to vaccination or on the secondary transmission of infection by live vaccines to patients receiving XELJANZ Live vaccines should not be given concurrently with XELJANZ

Update immunizations in agreement with current immunization guidelines prior to initiating XELJANZ therapy

7

Reference ID 3213422

56 Hepatic Impairment Treatment with XELJANZ is not recommended in patients with severe hepatic impairment [see Adverse Reactions (61) and Use in Specific Populations (86)]

6 ADVERSE REACTIONS Because clinical studies are conducted under widely varying conditions adverse reaction rates observed in the clinical studies of a drug cannot be directly compared to rates in the clinical studies of another drug and may not predict the rates observed in a broader patient population in clinical practice

The following data includes two Phase 2 and five Phase 3 double-blind controlled multicenter trials In these trials patients were randomized to doses of XELJANZ 5 mg twice daily (292 patients) and 10 mg twice daily (306 patients) monotherapy XELJANZ 5 mg twice daily (1044 patients) and 10 mg twice daily (1043 patients) in combination with DMARDs (including methotrexate) and placebo (809 patients) All seven protocols included provisions for patients taking placebo to receive treatment with XELJANZ at Month 3 or Month 6 either by patient response (based on uncontrolled disease activity) or by design so that adverse events cannot always be unambiguously attributed to a given treatment Therefore some analyses that follow include patients who changed treatment by design or by patient response from placebo to XELJANZ in both the placebo and XELJANZ group of a given interval Comparisons between placebo and XELJANZ were based on the first 3 months of exposure and comparisons between XELJANZ 5 mg twice daily and XELJANZ 10 mg twice daily were based on the first 12 months of exposure

The long-term safety population includes all patients who participated in a double-blind controlled trial (including earlier development phase studies) and then participated in one of two long-term safety studies The design of the long-term safety studies allowed for modification of XELJANZ doses according to clinical judgment This limits the interpretation of the long-term safety data with respect to dose

61 Clinical Trial Experience The most common serious adverse reactions were serious infections [see Warnings and Precautions (51)]

The proportion of patients who discontinued treatment due to any adverse reaction during the 0 to 3 months exposure in the double-blind placebo-controlled trials was 4 for patients taking XELJANZ and 3 for placebo-treated patients

Overall Infections

In the seven controlled trials during the 0 to 3 months exposure the overall frequency of infections was 20 and 22 in the 5 mg twice daily and 10 mg twice daily groups respectively and 18 in the placebo group

The most commonly reported infections with XELJANZ were upper respiratory tract infections nasopharyngitis and urinary tract infections (4 3 and 2 of patients respectively)

8

Reference ID 3213422

Serious Infections In the seven controlled trials during the 0 to 3 months exposure serious infections were reported in 1 patient (05 events per 100 patient-years) who received placebo and 11 patients (17 events per 100 patient-years) who received XELJANZ 5 mg or 10 mg twice daily The rate difference between treatment groups (and the corresponding 95 confidence interval) was 11 (-04 25) events per 100 patient-years for the combined 5 mg twice daily and 10 mg twice daily XELJANZ group minus placebo

In the seven controlled trials during the 0 to 12 months exposure serious infections were reported in 34 patients (27 events per 100 patient-years) who received 5 mg twice daily of XELJANZ and 33 patients (27 events per 100 patient-years) who received 10 mg twice daily of XELJANZ The rate difference between XELJANZ doses (and the corresponding 95 confidence interval) was -01 (-13 12) events per 100 patient-years for 10 mg twice daily XELJANZ minus 5 mg twice daily XELJANZ

The most common serious infections included pneumonia cellulitis herpes zoster and urinary tract infection [see Warnings and Precautions (51)]

Tuberculosis In the seven controlled trials during the 0 to 3 months exposure tuberculosis was not reported in patients who received placebo 5 mg twice daily of XELJANZ or 10 mg twice daily of XELJANZ

In the seven controlled trials during the 0 to 12 months exposure tuberculosis was reported in 0 patients who received 5 mg twice daily of XELJANZ and 6 patients (05 events per 100 patient-years) who received 10 mg twice daily of XELJANZ The rate difference between XELJANZ doses (and the corresponding 95 confidence interval) was 05 (01 09) events per 100 patient-years for 10 mg twice daily XELJANZ minus 5 mg twice daily XELJANZ

Cases of disseminated tuberculosis were also reported The median XELJANZ exposure prior to diagnosis of tuberculosis was 10 months (range from 152 to 960 days) [see Warnings and Precautions (51)]

Opportunistic Infections (excluding tuberculosis) In the seven controlled trials during the 0 to 3 months exposure opportunistic infections were not reported in patients who received placebo 5 mg twice daily of XELJANZ or 10 mg twice daily of XELJANZ

In the seven controlled trials during the 0 to 12 months exposure opportunistic infections were reported in 4 patients (03 events per 100 patient-years) who received 5 mg twice daily of XELJANZ and 4 patients (03 events per 100 patient-years) who received 10 mg twice daily of XELJANZ The rate difference between XELJANZ doses (and the corresponding 95 confidence interval) was 0 (-05 05) events per 100 patient-years for 10 mg twice daily XELJANZ minus 5 mg twice daily XELJANZ

The median XELJANZ exposure prior to diagnosis of an opportunistic infection was 8 months (range from 41 to 698 days) [see Warnings and Precautions (51)]

Malignancy In the seven controlled trials during the 0 to 3 months exposure malignancies excluding NMSC were reported in 0 patients who received placebo and 2 patients (03 events per 100 patientshy

9

Reference ID 3213422

years) who received either XELJANZ 5 mg or 10 mg twice daily The rate difference between treatment groups (and the corresponding 95 confidence interval) was 03 (-01 07) events per 100 patient-years for the combined 5 mg and 10 mg twice daily XELJANZ group minus placebo

In the seven controlled trials during the 0 to 12 months exposure malignancies excluding NMSC were reported in 5 patients (04 events per 100 patient-years) who received 5 mg twice daily of XELJANZ and 7 patients (06 events per 100 patient-years) who received 10 mg twice daily of XELJANZ The rate difference between XELJANZ doses (and the corresponding 95 confidence interval) was 02 (-04 07) events per 100 patient-years for 10 mg twice daily XELJANZ minus 5 mg twice daily XELJANZ One of these malignancies was a case of lymphoma that occurred during the 0 to 12 month period in a patient treated with XELJANZ 10 mg twice daily

The most common types of malignancy including malignancies observed during the long-term extension were lung and breast cancer followed by gastric colorectal renal cell prostate cancer lymphoma and malignant melanoma [see Warnings and Precautions (52)]

Laboratory Tests

Lymphocytes In the controlled clinical trials confirmed decreases in lymphocyte counts below 500 cellsmm3

occurred in 004 of patients for the 5 mg twice daily and 10 mg twice daily XELJANZ groups combined during the first 3 months of exposure

Confirmed lymphocyte counts less than 500 cellsmm3 were associated with an increased incidence of treated and serious infections [see Warnings and Precautions (54)]

Neutrophils In the controlled clinical trials confirmed decreases in ANC below 1000 cellsmm3 occurred in 007 of patients for the 5 mg twice daily and 10 mg twice daily XELJANZ groups combined during the first 3 months of exposure

There were no confirmed decreases in ANC below 500 cellsmm3 observed in any treatment group

There was no clear relationship between neutropenia and the occurrence of serious infections

In the long-term safety population the pattern and incidence of confirmed decreases in ANC remained consistent with what was seen in the controlled clinical trials [see Warnings and Precautions (54)]

Liver Enzyme Tests Confirmed increases in liver enzymes greater than 3 times the upper limit of normal (3x ULN) were observed in patients treated with XELJANZ In patients experiencing liver enzyme elevation modification of treatment regimen such as reduction in the dose of concomitant DMARD interruption of XELJANZ or reduction in XELJANZ dose resulted in decrease or normalization of liver enzymes

In the controlled monotherapy trials (0-3 months) no differences in the incidence of ALT or AST elevations were observed between the placebo and XELJANZ 5 mg and 10 mg twice daily groups

10

Reference ID 3213422

In the controlled background DMARD trials (0-3 months) ALT elevations greater than 3x ULN were observed in 10 13 and 12 of patients receiving placebo 5 mg and 10 mg twice daily respectively In these trials AST elevations greater than 3x ULN were observed in 06 05 and 04 of patients receiving placebo 5 mg and 10 mg twice daily respectively

One case of drug-induced liver injury was reported in a patient treated with XELJANZ 10 mg twice daily for approximately 25 months The patient developed symptomatic elevations of AST and ALT greater than 3x ULN and bilirubin elevations greater than 2x ULN which required hospitalizations and a liver biopsy

Lipids In the controlled clinical trials dose-related elevations in lipid parameters (total cholesterol LDL cholesterol HDL cholesterol triglycerides) were observed at one month of exposure and remained stable thereafter Changes in lipid parameters during the first 3 months of exposure in the controlled clinical trials are summarized below

bull Mean LDL cholesterol increased by 15 in the XELJANZ 5 mg twice daily arm and 19 in the XELJANZ 10 mg twice daily arm

bull Mean HDL cholesterol increased by 10 in the XELJANZ 5 mg twice daily arm and 12 in the XELJANZ 10 mg twice daily arm

bull Mean LDLHDL ratios were essentially unchanged in XELJANZ-treated patients

In a controlled clinical trial elevations in LDL cholesterol and ApoB decreased to pretreatment levels in response to statin therapy

In the long-term safety population elevations in lipid parameters remained consistent with what was seen in the controlled clinical trials

11

Reference ID 3213422

Serum Creatinine In the controlled clinical trials dose-related elevations in serum creatinine were observed with XELJANZ treatment The mean increase in serum creatinine was lt01 mgdL in the 12-month pooled safety analysis however with increasing duration of exposure in the long-term extensions up to 2 of patients were discontinued from XELJANZ treatment due to the protocol-specified discontinuation criterion of an increase in creatinine by more than 50 of baseline The clinical significance of the observed serum creatinine elevations is unknown

Other Adverse Reactions Adverse reactions occurring in 2 or more of patients on 5 mg twice daily or 10 mg twice daily XELJANZ and at least 1 greater than that observed in patients on placebo with or without DMARD are summarized in Table 4

Table 4 Adverse Reactions Occurring in at Least 2 or More of Patients on 5 or 10 mg Twice Daily XELJANZ With or Without DMARD (0-3 months) and at Least 1 Greater Than That Observed in Patients on Placebo

XELJANZ 5 mg Twice Daily

XELJANZ 10 mg Twice Daily

Placebo

Preferred Term N = 1336

() N = 1349

() N = 809

()

Diarrhea 40 29 23

Nasopharyngitis 38 28 28

Upper respiratory tract infection 45 38 33

Headache 43 34 21

Hypertension 16 23 11

N reflects randomized and treated patients from the seven clinical trials

Other adverse reactions occurring in controlled and open-label extension studies included

Blood and lymphatic system disorders Anemia Metabolism and nutrition disorders Dehydration Psychiatric disorders Insomnia Nervous system disorders Paresthesia Respiratory thoracic and mediastinal disorders Dyspnea cough sinus congestion Gastrointestinal disorders Abdominal pain dyspepsia vomiting gastritis nausea Hepatobiliary disorders Hepatic steatosis Skin and subcutaneous tissue disorders Rash erythema pruritus Musculoskeletal connective tissue and bone disorders Musculoskeletal pain arthralgia tendonitis joint swelling General disorders and administration site conditions Pyrexia fatigue peripheral edema

12

Reference ID 3213422

7 DRUG INTERACTIONS

71 Potent CYP3A4 Inhibitors Tofacitinib exposure is increased when XELJANZ is coadministered with potent inhibitors of cytochrome P450 (CYP) 3A4 (eg ketoconazole) [see Dosage and Administration (21) and Figure 3]

72 Moderate CYP3A4 and Potent CYP2C19 Inhibitors Tofacitinib exposure is increased when XELJANZ is coadministered with medications that result in both moderate inhibition of CYP3A4 and potent inhibition of CYP2C19 (eg fluconazole) [see Dosage and Administration (21) and Figure 3]

73 Potent CYP3A4 Inducers Tofacitinib exposure is decreased when XELJANZ is coadministered with potent CYP3A4 inducers (eg rifampin) [see Dosage and Administration (21) and Figure 3]

74 Immunosuppressive Drugs There is a risk of added immunosuppression when XELJANZ is coadministered with potent immunosuppressive drugs (eg azathioprine tacrolimus cyclosporine) Combined use of multiple-dose XELJANZ with potent immunosuppressives has not been studied in rheumatoid arthritis

8 USE IN SPECIFIC POPULATIONS

81 Pregnancy Teratogenic effects Pregnancy Category C There are no adequate and well-controlled studies in pregnant women XELJANZ should be used during pregnancy only if the potential benefit justifies the potential risk to the fetus Tofacitinib has been shown to be fetocidal and teratogenic in rats and rabbits when given at exposures 146 times and 13 times respectively the maximum recommended human dose (MRHD)

In a rat embryofetal developmental study tofacitinib was teratogenic at exposure levels approximately 146 times the MRHD (on an AUC basis at oral doses of 100 mgkgday) Teratogenic effects consisted of external and soft tissue malformations of anasarca and membranous ventricular septal defects respectively and skeletal malformations or variations (absent cervical arch bent femur fibula humerus radius scapula tibia and ulna sternoschisis absent rib misshapen femur branched rib fused rib fused sternebra and hemicentric thoracic centrum) In addition there was an increase in post-implantation loss consisting of early and late resorptions resulting in a reduced number of viable fetuses Mean fetal body weight was reduced No developmental toxicity was observed in rats at exposure levels approximately 58 times the MRHD (on an AUC basis at oral doses of 30 mgkgday) In the rabbit embryofetal developmental study tofacitinib was teratogenic at exposure levels approximately 13 times the MRHD (on an AUC basis at oral doses of 30 mgkgday) in the absence of signs of maternal toxicity Teratogenic effects included thoracogastroschisis omphalocele membranous ventricular septal defects and cranialskeletal malformations (microstomia microphthalmia)

13

Reference ID 3213422

mid-line and tail defects In addition there was an increase in post-implantation loss associated with late resorptions No developmental toxicity was observed in rabbits at exposure levels approximately 3 times the MRHD (on an AUC basis at oral doses of 10 mgkgday)

Nonteratogenic effects In a peri- and postnatal rat study there were reductions in live litter size postnatal survival and pup body weights at exposure levels approximately 73 times the MRHD (on an AUC basis at oral doses of 50 mgkgday) There was no effect on behavioral and learning assessments sexual maturation or the ability of the F1 generation rats to mate and produce viable F2 generation fetuses in rats at exposure levels approximately 17 times the MRHD (on an AUC basis at oral doses of 10 mgkgday)

Pregnancy Registry To monitor the outcomes of pregnant women exposed to XELJANZ a pregnancy registry has been established Physicians are encouraged to register patients and pregnant women are encouraged to register themselves by calling 1-877-311-8972

83 Nursing Mothers Tofacitinib was secreted in milk of lactating rats It is not known whether tofacitinib is excreted in human milk Because many drugs are excreted in human milk and because of the potential for serious adverse reactions in nursing infants from tofacitinib a decision should be made whether to discontinue nursing or to discontinue the drug taking into account the importance of the drug for the mother

84 Pediatric Use The safety and effectiveness of XELJANZ in pediatric patients have not been established

85 Geriatric Use Of the 3315 patients who enrolled in Studies I to V a total of 505 rheumatoid arthritis patients were 65 years of age and older including 71 patients 75 years and older The frequency of serious infection among XELJANZ-treated subjects 65 years of age and older was higher than among those under the age of 65 As there is a higher incidence of infections in the elderly population in general caution should be used when treating the elderly

86 Hepatic Impairment No dose adjustment is required in patients with mild hepatic impairment XELJANZ dose should be reduced to 5 mg once daily in patients with moderate hepatic impairment The safety and efficacy of XELJANZ have not been studied in patients with severe hepatic impairment or in patients with positive hepatitis B virus or hepatitis C virus serology [see Dosage and Administration (21) and Warnings and Precautions (56)]

87 Renal Impairment No dose adjustment is required in patients with mild renal impairment XELJANZ dose should be reduced to 5 mg once daily in patients with moderate and severe renal impairment [see Dosage and Administration (21)] In clinical trials XELJANZ was not evaluated in rheumatoid arthritis patients with baseline creatinine clearance values (estimated by the Cockroft-Gault equation) less than 40 mLmin

14

Reference ID 3213422

10 OVERDOSAGE Signs Symptoms and Laboratory Findings of Acute Overdosage in Humans There is no experience with overdose of XELJANZ

Treatment or Management of Overdose Pharmacokinetic data up to and including a single dose of 100 mg in healthy volunteers indicate that more than 95 of the administered dose is expected to be eliminated within 24 hours

There is no specific antidote for overdose with XELJANZ In case of an overdose it is recommended that the patient be monitored for signs and symptoms of adverse reactions Patients who develop adverse reactions should receive appropriate treatment

11 DESCRIPTION XELJANZ is the citrate salt of tofacitinib a JAK inhibitor

Tofacitinib citrate is a white to off-white powder with the following chemical name (3R4R)-4shymethyl-3-(methyl-7H-pyrrolo [23-d]pyrimidin-4-ylamino)-szlig-oxo-1-piperidinepropanenitrile 2shyhydroxy-123-propanetricarboxylate (11) It is freely soluble in water

Tofacitinib citrate has a molecular weight of 5045 Daltons (or 3124 Daltons as the tofacitinib free base) and a molecular formula of C16H20N6ObullC6H8O7 The chemical structure of tofacitinib citrate is

NN

Me

Me

N

N N H

O N

HO2C CO2H

HO2C

OH bull

XELJANZ is supplied for oral administration as 5 mg tofacitinib (equivalent to 8 mg tofacitinib citrate) white round immediate-release film-coated tablet Each tablet of XELJANZ contains the appropriate amount of XELJANZ as a citrate salt and the following inactive ingredients microcrystalline cellulose lactose monohydrate croscarmellose sodium magnesium stearate HPMC 2910Hypromellose 6cP titanium dioxide macrogolPEG3350 and triacetin

12 CLINICAL PHARMACOLOGY

121 Mechanism of Action Tofacitinib is a Janus kinase (JAK) inhibitor JAKs are intracellular enzymes which transmit signals arising from cytokine or growth factor-receptor interactions on the cellular membrane to influence cellular processes of hematopoiesis and immune cell function Within the signaling pathway JAKs phosphorylate and activate Signal Transducers and Activators of Transcription (STATs) which modulate intracellular activity including gene expression Tofacitinib modulates

15

Reference ID 3213422

the signaling pathway at the point of JAKs preventing the phosphorylation and activation of STATs JAK enzymes transmit cytokine signaling through pairing of JAKs (eg JAK1JAK3 JAK1JAK2 JAK1TyK2 JAK2JAK2) Tofacitinib inhibited the in vitro activities of JAK1JAK2 JAK1JAK3 and JAK2JAK2 combinations with IC50 of 406 56 and 1377 nM respectively However the relevance of specific JAK combinations to therapeutic effectiveness is not known

122 Pharmacodynamics Treatment with XELJANZ was associated with dose-dependent reductions of circulating CD1656+ natural killer cells with estimated maximum reductions occurring at approximately 8shy10 weeks after initiation of therapy These changes generally resolved within 2-6 weeks after discontinuation of treatment Treatment with XELJANZ was associated with dose-dependent increases in B cell counts Changes in circulating T-lymphocyte counts and T-lymphocyte subsets (CD3+ CD4+ and CD8+) were small and inconsistent The clinical significance of these changes is unknown

Total serum IgG IgM and IgA levels after 6-month dosing in patients with rheumatoid arthritis were lower than placebo however changes were small and not dose-dependent

After treatment with XELJANZ in patients with rheumatoid arthritis rapid decreases in serum C-reactive protein (CRP) were observed and maintained throughout dosing Changes in CRP observed with XELJANZ treatment do not reverse fully within 2 weeks after discontinuation indicating a longer duration of pharmacodynamic activity compared to the pharmacokinetic half-life

123 Pharmacokinetics Following oral administration of XELJANZ peak plasma concentrations are reached within 05shy1 hour elimination half-life is ~3 hours and a dose-proportional increase in systemic exposure was observed in the therapeutic dose range Steady state concentrations are achieved in 24-48 hours with negligible accumulation after twice daily administration

Absorption The absolute oral bioavailability of tofacitinib is 74 Coadministration of XELJANZ with a high-fat meal resulted in no changes in AUC while Cmax was reduced by 32 In clinical trials XELJANZ was administered without regard to meals

Distribution After intravenous administration the volume of distribution is 87 L The protein binding of tofacitinib is ~40 Tofacitinib binds predominantly to albumin and does not appear to bind to 1-acid glycoprotein Tofacitinib distributes equally between red blood cells and plasma

Metabolism and Elimination Clearance mechanisms for tofacitinib are approximately 70 hepatic metabolism and 30 renal excretion of the parent drug The metabolism of tofacitinib is primarily mediated by CYP3A4 with minor contribution from CYP2C19 In a human radiolabeled study more than 65 of the total circulating radioactivity was accounted for by unchanged tofacitinib with the remaining

16

Reference ID 3213422

35 attributed to 8 metabolites each accounting for less than 8 of total radioactivity The pharmacologic activity of tofacitinib is attributed to the parent molecule

Pharmacokinetics in Rheumatoid Arthritis Patients Population PK analysis in rheumatoid arthritis patients indicated no clinically relevant change in tofacitinib exposure after accounting for differences in renal function (ie creatinine clearance) between patients based on age weight gender and race (Figure 1) An approximately linear relationship between body weight and volume of distribution was observed resulting in higher peak (Cmax) and lower trough (Cmin) concentrations in lighter patients However this difference is not considered to be clinically relevant The between-subject variability ( coefficient of variation) in AUC of tofacitinib is estimated to be approximately 27

Specific Populations The effect of renal and hepatic impairment and other intrinsic factors on the pharmacokinetics of tofacitinib is shown in Figure 1

17

Reference ID 3213422

Figure 1 Impact of Intrinsic Factors on Tofacitinib Pharmacokinetics

Intrinsic Factor

Weight = 40 kg

Weight = 140 kg

Age = 80 years

Female

Asian

Black

Hispanic

Renal Impairment (Mild)

Renal Impairment (Moderate)

Renal Impairment (Severe)

Hepatic Impairment (Mild)

Hepatic Impairment (Moderate)

PK

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

0

Ratio and 90 CI Recommendation

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

Reduce Dose to 5 mg Once Daily

Reduce Dose to 5 mg Once Daily

No Dose Adjustment

Reduce Dose to 5 mg Once Daily

05 1 15 2 25 3 35 4

Ratio relative to reference

Supplemental doses are not necessary in patients after dialysis

Reference values for weight age gender and race comparisons are 70 kg 55 years male and White respectively Reference groups for renal and hepatic impairment data are subjects with normal renal and hepatic function

Drug Interactions

Potential for XELJANZ to Influence the PK of Other Drugs In vitro studies indicate that tofacitinib does not significantly inhibit or induce the activity of the

18

Reference ID 3213422

major human drug-metabolizing CYPs (CYP1A2 CYP2B6 CYP2C8 CYP2C9 CYP2C19 CYP2D6 and CYP3A4) at concentrations exceeding 185 times the steady state Cmax of a 5 mg twice daily dose These in vitro results were confirmed by a human drug interaction study showing no changes in the PK of midazolam a highly sensitive CYP3A4 substrate when coadministered with XELJANZ

In rheumatoid arthritis patients the oral clearance of tofacitinib does not vary with time indicating that tofacitinib does not normalize CYP enzyme activity in rheumatoid arthritis patients Therefore coadministration with XELJANZ is not expected to result in clinically relevant increases in the metabolism of CYP substrates in rheumatoid arthritis patients

In vitro data indicate that the potential for tofacitinib to inhibit transporters such as Pshyglycoprotein organic anionic or cationic transporters at therapeutic concentrations is low

Dosing recommendations for coadministered drugs following administration with XELJANZ are shown in Figure 2

Figure 2 Impact of XELJANZ on PK of Other Drugs

Coadministered PK Drug

Methotrexate AUC

Cmax

CYP3A Substrate AUC Midazolam

Cmax

Oral ContraceptivesLevonorgestrel

AUC

Cmax

Ethinyl Estradiol AUC

Cmax

OCT amp MATE Substrate AUC Metformin

Cmax

Ratio and 90 CI Recommendation

No Dose Adjustment

No dose adjustment for CYP3A substrates such as midazolam

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

0 025 05 075 1 125 15 175 2

Ratio relative to reference

Note Reference group is administration of concomitant medication alone OCT = Organic Cationic Transporter MATE = Multidrug and Toxic Compound Extrusion

Potential for Other Drugs to Influence the PK of Tofacitinib Since tofacitinib is metabolized by CYP3A4 interaction with drugs that inhibit or induce CYP3A4 is likely Inhibitors of CYP2C19 alone or P-glycoprotein are unlikely to substantially alter the PK of tofacitinib Dosing recommendations for XELJANZ for administration with CYP inhibitors or inducers are shown in Figure 3

19

Reference ID 3213422

Figure 3 Impact of Other Drugs on PK of XELJANZ

Coadministered PK Drug

CYP3A Inhib itor AUC Ketoconazole

Cmax

CYP3A amp CYP2C19 Inhib itor AUC

Cmax Fluconazole

CYP Inducer Rifampin AUC

Cmax

Methotrexate AUC

Cmax

Tacrolimus AUC Cmax

Cyclosporine AUC

Cmax

Ratio and 90 CI Recommendation

Reduce XELJANZ Dose to 5 mg Once Daily

Reduce XELJANZ Dose to 5 mg Once Daily

May Decrease Efficacy

No Dose Adjustment

There is a risk of added immunosuppressionif XELJANZ is taken with Tacrolimus

There is a risk of added immunosuppressionif XELJANZ is taken with Cyclosporine

0 05 1 15 2 25

Ratio relative to reference

Note Reference group is administration of tofacitinib alone

13 NONCLINICAL TOXICOLOGY

131 Carcinogenesis Mutagenesis Impairment of Fertility In a 39-week toxicology study in monkeys tofacitinib at exposure levels approximately 6 times the MRHD (on an AUC basis at oral doses of 5 mgkg twice daily) produced lymphomas No lymphomas were observed in this study at exposure levels 1 times the MRHD (on an AUC basis at oral doses of 1 mgkg twice daily)

The carcinogenic potential of tofacitinib was assessed in 6-month rasH2 transgenic mouse carcinogenicity and 2-year rat carcinogenicity studies Tofacitinib at exposure levels approximately 34 times the MRHD (on an AUC basis at oral doses of 200 mgkgday) was not carcinogenic in mice

In the 24-month oral carcinogenicity study in Sprague-Dawley rats tofacitinib caused benign Leydig cell tumors hibernomas (malignancy of brown adipose tissue) and benign thymomas at doses greater than or equal to 30 mgkgday (approximately 42 times the exposure levels at the MRHD on an AUC basis) The relevance of benign Leydig cell tumors to human risk is not known

20

Reference ID 3213422

Tofacitinib was not mutagenic in the bacterial reverse mutation assay It was positive for clastogenicity in the in vitro chromosome aberration assay with human lymphocytes in the presence of metabolic enzymes but negative in the absence of metabolic enzymes Tofacitinib was negative in the in vivo rat micronucleus assay and in the in vitro CHO-HGPRT assay and the in vivo rat hepatocyte unscheduled DNA synthesis assay

In rats tofacitinib at exposure levels approximately 17 times the MRHD (on an AUC basis at oral doses of 10 mgkgday) reduced female fertility due to increased post-implantation loss There was no impairment of female rat fertility at exposure levels of tofacitinib equal to the MRHD (on an AUC basis at oral doses of 1 mgkgday) Tofacitinib exposure levels at approximately 133 times the MRHD (on an AUC basis at oral doses of 100 mgkgday) had no effect on male fertility sperm motility or sperm concentration

14 CLINICAL STUDIES The XELJANZ clinical development program included two dose-ranging trials and five confirmatory trials

DOSE-RANGING TRIALS Dose selection for XELJANZ was based on two pivotal dose-ranging trials

Dose-Ranging Study 1 was a 6-month monotherapy trial in 384 patients with active rheumatoid arthritis who had an inadequate response to a DMARD Patients who previously received adalimumab therapy were excluded Patients were randomized to 1 of 7 monotherapy treatments XELJANZ 1 3 5 10 or 15 mg twice daily adalimumab 40 mg subcutaneously every other week for 10 weeks followed by XELJANZ 5 mg twice daily for 3 months or placebo

Dose-Ranging Study 2 was a 6-month trial in which 507 patients with active rheumatoid arthritis who had an inadequate response to MTX alone received one of 6 dose regimens of XELJANZ (20 mg once daily 1 3 5 10 or 15 mg twice daily) or placebo added to background MTX

The results of XELJANZ-treated patients achieving ACR20 responses in Studies 1 and 2 are shown in Figure 4 Although a dose-response relationship was observed in Study 1 the proportion of patients with an ACR20 response did not clearly differ between the 10 mg and 15 mg doses Furthermore there was a smaller proportion of patients who responded to adalimumab monotherapy compared to those treated with XELJANZ doses 3 mg twice daily and greater In Study 2 a smaller proportion of patients achieved an ACR20 response in the placebo and XELJANZ 1 mg groups compared to patients treated with the other XELJANZ doses However there was no difference in the proportion of responders among patients treated with XELJANZ 3 5 10 15 mg twice daily or 20 mg once daily doses

21

Reference ID 3213422

Figure 4 Proportion of Patients with ACR20 Response at Month 3 in Dose-Ranging Studies 1 and 2

CONFIRMATORY TRIALS Study I was a 6-month monotherapy trial in which 610 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to a DMARD (nonbiologic or biologic) received XELJANZ 5 or 10 mg twice daily or placebo At the Month 3 visit all patients randomized to placebo treatment were advanced in a blinded fashion to a second predetermined treatment of XELJANZ 5 or 10 mg twice daily The primary endpoints at Month 3 were the proportion of patients who achieved an ACR20 response changes in Health Assessment Questionnaire ndash Disability Index (HAQ-DI) and rates of Disease Activity Score DAS28-4(ESR) less than 26

Study II was a 12-month trial in which 792 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to a nonbiologic DMARD received XELJANZ 5 or 10 mg twice daily or placebo added to background DMARD treatment (excluding potent immunosuppressive treatments such as azathioprine or cyclosporine) At the Month 3 visit nonresponding patients were advanced in a blinded fashion to a second predetermined treatment of XELJANZ 5 or 10 mg twice daily At the end of Month 6 all placebo patients were advanced to their second predetermined treatment in a blinded fashion The primary endpoints were the proportion of patients who achieved an ACR20 response at Month 6 changes in HAQ-DI at Month 3 and rates of DAS28-4(ESR) less than 26 at Month 6

Study III was a 12-month trial in 717 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to MTX Patients received XELJANZ 5 or 10 mg twice daily adalimumab 40 mg subcutaneously every other week or placebo added to background MTX

22

Reference ID 3213422

Placebo patients were advanced as in Study II The primary endpoints were the proportion of patients who achieved an ACR20 response at Month 6 HAQ-DI at Month 3 and DAS28-4(ESR) less than 26 at Month 6

Study IV is an ongoing 2-year trial with a planned analysis at 1 year in which 797 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to MTX received XELJANZ 5 or 10 mg twice daily or placebo added to background MTX Placebo patients were advanced as in Study II The primary endpoints were the proportion of patients who achieved an ACR20 response at Month 6 mean change from baseline in van der Heijde-modified total Sharp Score (mTSS) at Month 6 HAQ-DI at Month 3 and DAS28-4(ESR) less than 26 at Month 6

Study V was a 6-month trial in which 399 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to at least one approved TNF-inhibiting biologic agent received XELJANZ 5 or 10 mg twice daily or placebo added to background MTX At the Month 3 visit all patients randomized to placebo treatment were advanced in a blinded fashion to a second predetermined treatment of XELJANZ 5 or 10 mg twice daily The primary endpoints at Month 3 were the proportion of patients who achieved an ACR20 response HAQ-DI and DAS28-4(ESR) less than 26

Clinical Response The percentages of XELJANZ-treated patients achieving ACR20 ACR50 and ACR70 responses in Studies I IV and V are shown in Table 5 Similar results were observed with Studies II and III In all trials patients treated with either 5 or 10 mg twice daily XELJANZ had higher ACR20 ACR50 and ACR70 response rates versus placebo with or without background DMARD treatment at Month 3 and Month 6 Higher ACR20 response rates were observed within 2 weeks compared to placebo In the 12-month trials ACR response rates in XELJANZ-treated patients were consistent at 6 and 12 months

23

Reference ID 3213422

Table 5 Proportion of Patients with an ACR Response Percent of Patients

Monotherapy in Nonbiologic or Biologic DMARD Inadequate

Respondersc

MTX Inadequate Respondersd TNF Inhibitor Inadequate Responderse

Study I Study IV Study V

Na PBO

122

XELJANZ 5 mg Twice

Daily

243

XELJANZ 10 mg Twice Daily

245

PBO + MTX

160

XELJANZ 5 mg Twice

Daily + MTX

321

XELJANZ 10 mg Twice

Daily + MTX

316

PBO +

MTX

132

XELJANZ 5 mg Twice

Daily + MTX

133

XELJANZ 10 mg Twice

Daily + MTX

134 ACR20 Month 3 Month 6

26 NAb

59 69

65 70

27 25

55 50

67 62

24 NA

41 51

48 54

ACR50 Month 3 Month 6

12 NA

31 42

36 46

8 9

29 32

37 44

8 NA

26 37

28 30

ACR70 Month 3 Month 6

6 NA

15 22

20 29

3 1

11 14

17 23

2 NA

14 16

10 16

a N is number of randomized and treated patients b NA Not applicable as data for placebo treatment is not available beyond 3 months in Studies I and V due to placebo advancement c Inadequate response to at least one DMARD (biologic or nonbiologic) due to lack of efficacy or toxicity d Inadequate response to MTX defined as the presence of sufficient residual disease activity to meet the entry criteria e Inadequate response to a least one TNF inhibitor due to lack of efficacy andor intolerance

In Study IV a greater proportion of patients treated with XELJANZ 5 mg or 10 mg twice daily plus MTX achieved a low level of disease activity as measured by a DAS28-4(ESR) less than 26 at 6 months compared to those treated with MTX alone (Table 6)

24

Reference ID 3213422

Table 6 Proportion of Patients with DAS28-4(ESR) Less Than 26 with Number of Residual Active Joints Study IV DAS28-4(ESR) Less Than 26 Placebo + MTX

160

XELJANZ 5 mg Twice Daily + MTX

321

XELJANZ 10 mg Twice Daily + MTX

316 Proportion of responders at Month 6 (n) 1 (2) 6 (19) 13 (42)

Of responders proportion with 0 active joints (n)

50 (1) 42 (8) 36 (15)

Of responders proportion with 1 active joint (n) 0 5 (1) 17 (7) Of responders proportion with 2 active joints (n)

0 32 (6) 7 (3)

Of responders proportion with 3 or more active joints (n)

50 (1) 21 (4) 40 (17)

The results of the components of the ACR response criteria for Study IV are shown in Table 7 Similar results were observed in Studies I II III and V

Table 7 Components of ACR Response at 3 Months Study IV

XELJANZ

5 mg

Twice Daily + MTX

N=321

XELJANZ

10 mg

Twice Daily + MTX

N=316

Placebo + MTX

N=160

Component (mean) a Baseline Month 3a Baseline Month 3a Baseline Month 3a

Number of tender

joints 24 13 23 10 23 18

(0-68) (14) (14) (15) (12) (13) (14)

Number of swollen

joints 14 6 14 6 14 10

(0-66) (8) (8) (8) (7) (9) (9)

Painb 58

(23)

34

(23)

58

(24)

29

(22)

55

(24)

47

(24)

Patient global

assessmentb

58

(24)

35

(23)

57

(23)

29

(20)

54

(23)

47

(24)

Disability index

(HAQ-DI)c 141 099 140 084 132 119

(068) (065) (066) (064) (067) (068)

25

Reference ID 3213422

Physician global

assessmentb 59 30 58 24 56 43

(16) (19) (17) (17) (18) (22)

CRP (mgL) 153 71 171 44 137 146

(190) (191) (269) (86) (149) (187) aData shown is mean (Standard Deviation) at Month 3bVisual analog scale 0 = best 100 = worst cHealth Assessment Questionnaire Disability Index 0 = best 3 = worst 20 questions categories dressing and grooming arising eating walking hygiene reach grip and activities

The percent of ACR20 responders by visit for Study IV is shown in Figure 5 Similar responses were observed in Studies I II III and V

Figure 5 Percentage of ACR20 Responders by Visit for Study IV

Physical Function Response Improvement in physical functioning was measured by the HAQ-DI Patients receiving XELJANZ 5 and 10 mg twice daily demonstrated greater improvement from baseline in physical functioning compared to placebo at Month 3

The mean (95 CI) difference from placebo in HAQ-DI improvement from baseline at Month 3 in Study III was -022 (-035 -010) in patients receiving 5 mg XELJANZ twice daily and -032 (-044 -019) in patients receiving 10 mg XELJANZ twice daily Similar results were obtained in

26

Reference ID 3213422

Studies I II IV and V In the 12-month trials HAQ-DI results in XELJANZ-treated patients were consistent at 6 and 12 months

16 HOW SUPPLIEDSTORAGE AND HANDLING XELJANZ is provided as 5 mg tofacitinib (equivalent to 8 mg tofacitinib citrate) tablets White round immediate-release film-coated tablets debossed with ldquoPfizerrdquo on one side and ldquoJKI 5rdquo on the other side and available in

Bottles of 60 NDC 0069-1001-01 Bottles of 180 NDC 0069-1001-02

Storage and Handling Store at 20degC to 25degC (68degF to 77degF) [See USP Controlled Room Temperature]

Do not repackage

17 PATIENT COUNSELING INFORMATION See FDA-approved patient labeling (Medication Guide)

Inform patients of the availability of a Medication Guide and instruct them to read the Medication Guide prior to taking XELJANZ Instruct patients to take XELJANZ only as prescribed

This productrsquos label may have been updated For current full prescribing information please visit wwwpfizercom

LAB-0445-10

27

Reference ID 3213422

MEDICATION GUIDE

XELJANZ (ZELrsquo JANSrsquo) (tofacitinib)

Read this Medication Guide before you start taking XELJANZ and each time you get a refill There may be new information This Medication Guide does not take the place of talking to your healthcare provider about your medical condition or treatment

What is the most important information I should know about XELJANZ XELJANZ may cause serious side effects including

1 Serious infections

XELJANZ is a medicine that affects your immune system XELJANZ can lower the ability of your immune system to fight infections Some people have serious infections while taking XELJANZ including tuberculosis (TB) and infections caused by bacteria fungi or viruses that can spread throughout the body Some people have died from these infections Your healthcare provider should test you for TB before starting XELJANZ Your healthcare provider should monitor you closely for signs and symptoms of

TB infection during treatment with XELJANZ

You should not start taking XELJANZ if you have any kind of infection unless your healthcare provider tells you it is okay

Before starting XELJANZ tell your healthcare provider if you think you have an infection or have symptoms of an infection such as

o fever sweating or chills o warm red or painful skin o muscle aches or sores on your body o cough o diarrhea or stomach pain o shortness of breath o burning when you urinate o blood in phlegm or urinating more often o weight loss than normal

o feeling very tired are being treated for an infection get a lot of infections or have infections that keep coming back have diabetes HIV or a weak immune system People with these conditions

have a higher chance for infections have TB or have been in close contact with someone with TB live or have lived or have traveled to certain parts of the country (such as the

Ohio and Mississippi River valleys and the Southwest) where there is an increased chance for getting certain kinds of fungal infections (histoplasmosis coccidioidomycosis or blastomycosis) These infections may happen or become more severe if you use XELJANZ Ask your healthcare provider if you do not know if you have lived in an area where these infections are common

have or have had hepatitis B or C

28

Reference ID 3213422

After starting XELJANZ call your healthcare provider right away if you have any symptoms of an infection XELJANZ can make you more likely to get infections or make worse any infection that you have

2 Cancer and immune system problems

XELJANZ may increase your risk of certain cancers by changing the way your immune system works

Lymphoma and other cancers can happen in patients taking XELJANZ Tell your healthcare provider if you have ever had any type of cancer

Some people who have taken XELJANZ with certain other medicines to prevent kidney transplant rejection have had a problem with certain white blood cells growing out of control (Epstein Barr Virus-associated post transplant lymphoproliferative disorder)

3 Tears (perforation) in the stomach or intestines

Tell your healthcare provider if you have had diverticulitis (inflammation in parts of the large intestine) or ulcers in your stomach or intestines Some people taking XELJANZ get tears in their stomach or intestine This happens most often in people who also take nonsteroidal anti-inflammatory drugs (NSAIDs) corticosteroids or methotrexate

Tell your healthcare provider right away if you have fever and stomach-area pain that does not go away and a change in your bowel habits

4 Changes in certain laboratory test results Your healthcare provider should do blood tests before you start receiving XELJANZ and while you take XELJANZ to check for the following side effects

changes in lymphocyte counts Lymphocytes are white blood cells that help the body fight off infections

low neutrophil counts Neutrophils are white blood cells that help the body fight off infections

low red blood cell count This may mean that you have anemia which may make you feel weak and tired

Your healthcare provider should routinely check certain liver tests

You should not receive XELJANZ if your lymphocyte count neutrophil count or red blood cell count is too low or your liver tests are too high

Your healthcare provider may stop your XELJANZ treatment for a period of time if needed because of changes in these blood test results

29

Reference ID 3213422

You may also have changes in other laboratory tests such as your blood cholesterol levels Your healthcare provider should do blood tests to check your cholesterol levels 4 to 8 weeks after you start receiving XELJANZ and as needed after that Normal cholesterol levels are important to good heart health

See ldquoWhat are the possible side effects of XELJANZrdquo for more information about side effects

What is XELJANZ

XELJANZ is a prescription medicine called a Janus kinase (JAK) inhibitor XELJANZ is used to treat adults with moderately to severely active rheumatoid arthritis in which methotrexate did not work well

It is not known if XELJANZ is safe and effective in people with Hepatitis B or C

XELJANZ is not for people with severe liver problems

It is not known if XELJANZ is safe and effective in children

What should I tell my healthcare provider before taking XELJANZ

XELJANZ may not be right for you Before taking XELJANZ tell your healthcare provider if you have an infection See ldquoWhat is the most important information I should know

about XELJANZrdquo have liver problems have kidney problems have any stomach area (abdominal) pain or been diagnosed with diverticulitis or

ulcers in your stomach or intestines have had a reaction to tofacitinib or any of the ingredients in XELJANZ have recently received or are scheduled to receive a vaccine People who take

XELJANZ should not receive live vaccines People taking XELJANZ can receive non-live vaccines

have any other medical conditions plan to become pregnant or are pregnant It is not known if XELJANZ will harm

an unborn baby

Pregnancy Registry Pfizer has a registry for pregnant women who take XELJANZ The purpose of this registry is to check the health of the pregnant mother and her baby If you are pregnant or become pregnant while taking XELJANZ talk to your healthcare provider about how you can join this pregnancy registry or you may contact the registry at 1-877-311-8972 to enroll

plan to breastfeed or are breastfeeding You and your healthcare provider should decide if you will take XELJANZ or breastfeed You should not do both

30

Reference ID 3213422

Tell your healthcare provider about all the medicines you take including prescription and non-prescription medicines vitamins and herbal supplements XELJANZ and other medicines may affect each other causing side effects

Especially tell your healthcare provider if you take any other medicines to treat your rheumatoid arthritis You should not take

tocilizumab (Actemrareg) etanercept (Enbrelreg) adalimumab (Humirareg) infliximab (Remicadereg) rituximab (Rituxanreg) abatacept (Orenciareg) anakinra (Kineretreg) certolizumab (Cimziareg) golimumab (Simponireg) azathioprine cyclosporine or other immunosuppressive drugs while you are taking XELJANZ Taking XELJANZ with these medicines may increase your risk of infection

medicines that affect the way certain liver enzymes work Ask your healthcare provider if you are not sure if your medicine is one of these

Know the medicines you take Keep a list of them to show your healthcare provider and pharmacist when you get a new medicine

How should I take XELJANZ

Take XELJANZ as your healthcare provider tells you to take it

Take XELJANZ 2 times a day with or without food

If you take too much XELJANZ call your healthcare provider or go the nearest hospital emergency room right away

What are possible side effects of XELJANZ

XELJANZ may cause serious side effects including

See ldquoWhat is the most important information I should know about XELJANZrdquo

Hepatitis B or C activation infection in people who carry the virus in their blood If you are a carrier of the hepatitis B or C virus (viruses that affect the liver) the virus may become active while you use XELJANZ Your healthcare provider may do blood tests before you start treatment with XELJANZ and while you are using XELJANZ Tell your healthcare provider if you have any of the following symptoms of a possible hepatitis B or C infection

o feel very tired o fevers o skin or eyes look yellow o chills o little or no appetite o stomach discomfort o vomiting o muscle aches o clay-colored bowel o dark urine

movements o skin rash

31

Reference ID 3213422

Common side effects of XELJANZ include upper respiratory tract infections (common cold sinus infections) headache diarrhea nasal congestion sore throat and runny nose (nasopharyngitis)

Tell your healthcare provider if you have any side effect that bothers you or that does not go away

These are not all the possible side effects of XELJANZ For more information ask your healthcare provider or pharmacist

Call your doctor for medical advice about side effects You may report side effects to FDA at 1-800-FDA-1088

You may also report side effects to Pfizer at 1-800-438-1985

How should I store XELJANZ

Store XELJANZ at 68degF to 77degF (room temperature)

Safely throw away medicine that is out of date or no longer needed

Keep XELJANZ and all medicines out of the reach of children

General information about the safe and effective use of XELJANZ

Medicines are sometimes prescribed for purposes other than those listed in a Medication Guide Do not use XELJANZ for a condition for which it was not prescribed Do not give XELJANZ to other people even if they have the same symptoms you have It may harm them

This Medication Guide summarizes the most important information about XELJANZ If you would like more information talk to your healthcare provider You can ask your pharmacist or healthcare provider for information about XELJANZ that is written for health professionals

What are the ingredients in XELJANZ

Active ingredient tofacitinib citrate

Inactive ingredients microcrystalline cellulose lactose monohydrate croscarmellose sodium magnesium stearate HPMC 2910Hypromellose 6cP titanium dioxide macrogolPEG3350 and triacetin

32

Reference ID 3213422

This Medication Guide has been approved by the US Food and Drug Administration

LAB-0535-10 Issued November 2012

33

Reference ID 3213422

FULL PRESCRIBING INFORMATION

WARNING SERIOUS INFECTIONS AND MALIGNANCY

SERIOUS INFECTIONS Patients treated with XELJANZ are at increased risk for developing serious infections that may lead to hospitalization or death [see Warnings and Precautions (51) and Adverse Reactions (61)] Most patients who developed these infections were taking concomitant immunosuppressants such as methotrexate or corticosteroids

If a serious infection develops interrupt XELJANZ until the infection is controlled

Reported infections include

bull Active tuberculosis which may present with pulmonary or extrapulmonary disease Patients should be tested for latent tuberculosis before XELJANZ use and during therapy Treatment for latent infection should be initiated prior to XELJANZ use

bull Invasive fungal infections including cryptococcosis and pneumocystosis Patients with invasive fungal infections may present with disseminated rather than localized disease

bull Bacterial viral and other infections due to opportunistic pathogens

The risks and benefits of treatment with XELJANZ should be carefully considered prior to initiating therapy in patients with chronic or recurrent infection

Patients should be closely monitored for the development of signs and symptoms of infection during and after treatment with XELJANZ including the possible development of tuberculosis in patients who tested negative for latent tuberculosis infection prior to initiating therapy [see Warnings and Precautions (51)]

MALIGNANCIES Lymphoma and other malignancies have been observed in patients treated with XELJANZ Epstein Barr Virus- associated post-transplant lymphoproliferative disorder has been observed at an increased rate in renal transplant patients treated with XELJANZ and concomitant immunosuppressive medications [see Warnings and Precautions (52)]

1 INDICATIONS AND USAGE

11 Rheumatoid Arthritis XELJANZ (tofacitinib) is indicated for the treatment of adult patients with moderately to

severely active rheumatoid arthritis who have had an inadequate response or intolerance to methotrexate It may be used as monotherapy or in combination with methotrexate or other nonbiologic disease-modifying antirheumatic drugs (DMARDs)

XELJANZ should not be used in combination with biologic DMARDs or with potent immunosuppressants such as azathioprine and cyclosporine

2

Reference ID 3213422

2 DOSAGE AND ADMINISTRATION XELJANZ is given orally with or without food

21 Rheumatoid Arthritis XELJANZ may be used as monotherapy or in combination with methotrexate or other nonbiologic disease modifying antirheumatic drugs (DMARDs) The recommended dose of XELJANZ is 5 mg twice daily Dose interruption is recommended for management of lymphopenia neutropenia and anemia

[see Dosage and Administration (23) Warnings and Precautions (54) and Adverse Reactions (61)]

XELJANZ dosage should be reduced to 5 mg once daily in patients with moderate or severe renal insufficiency with moderate hepatic impairment receiving potent inhibitors of Cytochrome P450 3A4 (CYP3A4) (eg ketoconazole) receiving one or more concomitant medications that result in both moderate inhibition of

CYP3A4 and potent inhibition of CYP2C19 (eg fluconazole)

22 General Considerations for Administration XELJANZ should not be used in patients with severe hepatic impairment It is recommended that XELJANZ not be initiated in patients with a lymphocyte count less

than 500 cellsmm3 an absolute neutrophil count (ANC) less than 1000 cellsmm3 or who have hemoglobin levels less than 9 gdL

Coadministration of XELJANZ with potent inducers of CYP3A4 (eg rifampin) may result in loss of or reduced clinical response to XELJANZ

23 Dosage Modifications XELJANZ treatment should be interrupted if a patient develops a serious infection until the infection is controlled

Table 1 Dose Adjustments for Lymphopenia Low Lymphocyte Count [see Warnings and Precautions (54)]

Lab Value (cellsmm3)

Recommendation

Lymphocyte count greater than or equal to 500

Maintain dose

Lymphocyte count less than 500

(Confirmed by repeat testing)

Discontinue XELJANZ

3

Reference ID 3213422

Table 2 Dose Adjustments for Neutropenia Low ANC [see Warnings and Precautions (54)]

Lab Value (cellsmm3)

Recommendation

ANC greater than 1000 Maintain dose

ANC 500-1000 For persistent decreases in this range interrupt dosing until ANC is greater than 1000

When ANC is greater than 1000 resume XELJANZ 5 mg twice daily ANC less than 500

(Confirmed by repeat testing)

Discontinue XELJANZ

Table 3 Dose Adjustments for Anemia Low Hemoglobin Value [see Warnings and Precautions (54)]

Lab Value (gdL)

Recommendation

Less than or equal to 2 gdL decrease and greater than or equal to 90 gdL

Maintain dose

Greater than 2 gdL decrease or less than 80 gdL

(Confirmed by repeat testing)

Interrupt the administration of XELJANZ until hemoglobin values have normalized

3 DOSAGE FORMS AND STRENGTHS XELJANZ is provided as 5 mg tofacitinib (equivalent to 8 mg tofacitinib citrate) tablets White round immediate-release film-coated tablets debossed with ldquoPfizerrdquo on one side and ldquoJKI 5rdquo on the other side

4 CONTRAINDICATIONS None

5 WARNINGS AND PRECAUTIONS

51 Serious Infections Serious and sometimes fatal infections due to bacterial mycobacterial invasive fungal viral or other opportunistic pathogens have been reported in rheumatoid arthritis patients receiving XELJANZ The most common serious infections reported with XELJANZ included pneumonia cellulitis herpes zoster and urinary tract infection [see Adverse Reactions (61)] Among opportunistic infections tuberculosis and other mycobacterial infections cryptococcus esophageal candidiasis pneumocystosis multidermatomal herpes zoster cytomegalovirus and BK virus were reported with XELJANZ Some patients have presented with disseminated rather than localized disease and were often taking concomitant immunomodulating agents such as methotrexate or corticosteroids

Other serious infections that were not reported in clinical studies may also occur (eg histoplasmosis coccidioidomycosis and listeriosis)

4

Reference ID 3213422

XELJANZ should not be initiated in patients with an active infection including localized infections The risks and benefits of treatment should be considered prior to initiating XELJANZ in patients bull with chronic or recurrent infection bull who have been exposed to tuberculosis bull with a history of a serious or an opportunistic infection bull who have resided or traveled in areas of endemic tuberculosis or endemic mycoses or bull with underlying conditions that may predispose them to infection

Patients should be closely monitored for the development of signs and symptoms of infection during and after treatment with XELJANZ XELJANZ should be interrupted if a patient develops a serious infection an opportunistic infection or sepsis A patient who develops a new infection during treatment with XELJANZ should undergo prompt and complete diagnostic testing appropriate for an immunocompromised patient appropriate antimicrobial therapy should be initiated and the patient should be closely monitored

Tuberculosis Patients should be evaluated and tested for latent or active infection prior to administration of XELJANZ

Anti-tuberculosis therapy should also be considered prior to administration of XELJANZ in patients with a past history of latent or active tuberculosis in whom an adequate course of treatment cannot be confirmed and for patients with a negative test for latent tuberculosis but who have risk factors for tuberculosis infection Consultation with a physician with expertise in the treatment of tuberculosis is recommended to aid in the decision about whether initiating antishytuberculosis therapy is appropriate for an individual patient

Patients should be closely monitored for the development of signs and symptoms of tuberculosis including patients who tested negative for latent tuberculosis infection prior to initiating therapy

Patients with latent tuberculosis should be treated with standard antimycobacterial therapy before administering XELJANZ

Viral Reactivation Viral reactivation including cases of herpes virus reactivation (eg herpes zoster) were observed in clinical studies with XELJANZ The impact of XELJANZ on chronic viral hepatitis reactivation is unknown Patients who screened positive for hepatitis B or C were excluded from clinical trials

52 Malignancy and Lymphoproliferative Disorder Consider the risks and benefits of XELJANZ treatment prior to initiating therapy in patients with a known malignancy other than a successfully treated non-melanoma skin cancer (NMSC) or when considering continuing XELJANZ in patients who develop a malignancy Malignancies were observed in clinical studies of XELJANZ [see Adverse Reactions (61)]

5

Reference ID 3213422

In the seven controlled rheumatoid arthritis clinical studies 11 solid cancers and one lymphoma were diagnosed in 3328 patients receiving XELJANZ with or without DMARD compared to 0 solid cancers and 0 lymphomas in 809 patients in the placebo with or without DMARD group during the first 12 months of exposure Lymphomas and solid cancers have also been observed in the long-term extension studies in rheumatoid arthritis patients treated with XELJANZ

In Phase 2B controlled dose-ranging trials in de-novo renal transplant patients all of whom received induction therapy with basiliximab high dose corticosteroids and mycophenolic acid products Epstein Barr Virus-associated post-transplant lymphoproliferative disorder was observed in 5 out of 218 patients treated with XELJANZ (23) compared to 0 out of 111 patients treated with cyclosporine

53 Gastrointestinal Perforations Events of gastrointestinal perforation have been reported in clinical studies with XELJANZ in rheumatoid arthritis patients although the role of JAK inhibition in these events is not known

XELJANZ should be used with caution in patients who may be at increased risk for gastrointestinal perforation (eg patients with a history of diverticulitis) Patients presenting with new onset abdominal symptoms should be evaluated promptly for early identification of gastrointestinal perforation [see Adverse Reactions (61)]

54 Laboratory Parameters

Lymphocytes Treatment with XELJANZ was associated with initial lymphocytosis at one month of exposure followed by a gradual decrease in mean lymphocyte counts below the baseline of approximately 10 during 12 months of therapy Lymphocyte counts less than 500 cellsmm3 were associated with an increased incidence of treated and serious infections

Avoid initiation of XELJANZ treatment in patients with a low lymphocyte count (ie less than 500 cellsmm3) In patients who develop a confirmed absolute lymphocyte count less than 500 cellsmm3 treatment with XELJANZ is not recommended

Monitor lymphocyte counts at baseline and every 3 months thereafter For recommended modifications based on lymphocyte counts see Dosage and Administration (23)

Neutrophils Treatment with XELJANZ was associated with an increased incidence of neutropenia (less than 2000 cellsmm3) compared to placebo

Avoid initiation of XELJANZ treatment in patients with a low neutrophil count (ie ANC less than 1000 cellsmm3) For patients who develop a persistent ANC of 500-1000 cellsmm3 interrupt XELJANZ dosing until ANC is greater than or equal to 1000 cellsmm3 In patients who develop an ANC less than 500 cellsmm3 treatment with XELJANZ is not recommended

6

Reference ID 3213422

Monitor neutrophil counts at baseline and after 4-8 weeks of treatment and every 3 months thereafter For recommended modifications based on ANC results see Dosage and Administration (23)

Hemoglobin Avoid initiation of XELJANZ treatment in patients with a low hemoglobin level (ie less than 9 gdL) Treatment with XELJANZ should be interrupted in patients who develop hemoglobin levels less than 8 gdL or whose hemoglobin level drops greater than 2 gdL on treatment

Monitor hemoglobin at baseline and after 4-8 weeks of treatment and every 3 months thereafter For recommended modifications based on hemoglobin results see Dosage and Administration (23)

Liver Enzymes Treatment with XELJANZ was associated with an increased incidence of liver enzyme elevation compared to placebo Most of these abnormalities occurred in studies with background DMARD (primarily methotrexate) therapy

Routine monitoring of liver tests and prompt investigation of the causes of liver enzyme elevations is recommended to identify potential cases of drug-induced liver injury If drug-induced liver injury is suspected the administration of XELJANZ should be interrupted until this diagnosis has been excluded

Lipids Treatment with XELJANZ was associated with increases in lipid parameters including total cholesterol low-density lipoprotein (LDL) cholesterol and high-density lipoprotein (HDL) cholesterol Maximum effects were generally observed within 6 weeks The effect of these lipid parameter elevations on cardiovascular morbidity and mortality has not been determined

Assessment of lipid parameters should be performed approximately 4-8 weeks following initiation of XELJANZ therapy

Manage patients according to clinical guidelines [eg National Cholesterol Educational Program (NCEP)] for the management of hyperlipidemia

55 Vaccinations No data are available on the response to vaccination or on the secondary transmission of infection by live vaccines to patients receiving XELJANZ Live vaccines should not be given concurrently with XELJANZ

Update immunizations in agreement with current immunization guidelines prior to initiating XELJANZ therapy

7

Reference ID 3213422

56 Hepatic Impairment Treatment with XELJANZ is not recommended in patients with severe hepatic impairment [see Adverse Reactions (61) and Use in Specific Populations (86)]

6 ADVERSE REACTIONS Because clinical studies are conducted under widely varying conditions adverse reaction rates observed in the clinical studies of a drug cannot be directly compared to rates in the clinical studies of another drug and may not predict the rates observed in a broader patient population in clinical practice

The following data includes two Phase 2 and five Phase 3 double-blind controlled multicenter trials In these trials patients were randomized to doses of XELJANZ 5 mg twice daily (292 patients) and 10 mg twice daily (306 patients) monotherapy XELJANZ 5 mg twice daily (1044 patients) and 10 mg twice daily (1043 patients) in combination with DMARDs (including methotrexate) and placebo (809 patients) All seven protocols included provisions for patients taking placebo to receive treatment with XELJANZ at Month 3 or Month 6 either by patient response (based on uncontrolled disease activity) or by design so that adverse events cannot always be unambiguously attributed to a given treatment Therefore some analyses that follow include patients who changed treatment by design or by patient response from placebo to XELJANZ in both the placebo and XELJANZ group of a given interval Comparisons between placebo and XELJANZ were based on the first 3 months of exposure and comparisons between XELJANZ 5 mg twice daily and XELJANZ 10 mg twice daily were based on the first 12 months of exposure

The long-term safety population includes all patients who participated in a double-blind controlled trial (including earlier development phase studies) and then participated in one of two long-term safety studies The design of the long-term safety studies allowed for modification of XELJANZ doses according to clinical judgment This limits the interpretation of the long-term safety data with respect to dose

61 Clinical Trial Experience The most common serious adverse reactions were serious infections [see Warnings and Precautions (51)]

The proportion of patients who discontinued treatment due to any adverse reaction during the 0 to 3 months exposure in the double-blind placebo-controlled trials was 4 for patients taking XELJANZ and 3 for placebo-treated patients

Overall Infections

In the seven controlled trials during the 0 to 3 months exposure the overall frequency of infections was 20 and 22 in the 5 mg twice daily and 10 mg twice daily groups respectively and 18 in the placebo group

The most commonly reported infections with XELJANZ were upper respiratory tract infections nasopharyngitis and urinary tract infections (4 3 and 2 of patients respectively)

8

Reference ID 3213422

Serious Infections In the seven controlled trials during the 0 to 3 months exposure serious infections were reported in 1 patient (05 events per 100 patient-years) who received placebo and 11 patients (17 events per 100 patient-years) who received XELJANZ 5 mg or 10 mg twice daily The rate difference between treatment groups (and the corresponding 95 confidence interval) was 11 (-04 25) events per 100 patient-years for the combined 5 mg twice daily and 10 mg twice daily XELJANZ group minus placebo

In the seven controlled trials during the 0 to 12 months exposure serious infections were reported in 34 patients (27 events per 100 patient-years) who received 5 mg twice daily of XELJANZ and 33 patients (27 events per 100 patient-years) who received 10 mg twice daily of XELJANZ The rate difference between XELJANZ doses (and the corresponding 95 confidence interval) was -01 (-13 12) events per 100 patient-years for 10 mg twice daily XELJANZ minus 5 mg twice daily XELJANZ

The most common serious infections included pneumonia cellulitis herpes zoster and urinary tract infection [see Warnings and Precautions (51)]

Tuberculosis In the seven controlled trials during the 0 to 3 months exposure tuberculosis was not reported in patients who received placebo 5 mg twice daily of XELJANZ or 10 mg twice daily of XELJANZ

In the seven controlled trials during the 0 to 12 months exposure tuberculosis was reported in 0 patients who received 5 mg twice daily of XELJANZ and 6 patients (05 events per 100 patient-years) who received 10 mg twice daily of XELJANZ The rate difference between XELJANZ doses (and the corresponding 95 confidence interval) was 05 (01 09) events per 100 patient-years for 10 mg twice daily XELJANZ minus 5 mg twice daily XELJANZ

Cases of disseminated tuberculosis were also reported The median XELJANZ exposure prior to diagnosis of tuberculosis was 10 months (range from 152 to 960 days) [see Warnings and Precautions (51)]

Opportunistic Infections (excluding tuberculosis) In the seven controlled trials during the 0 to 3 months exposure opportunistic infections were not reported in patients who received placebo 5 mg twice daily of XELJANZ or 10 mg twice daily of XELJANZ

In the seven controlled trials during the 0 to 12 months exposure opportunistic infections were reported in 4 patients (03 events per 100 patient-years) who received 5 mg twice daily of XELJANZ and 4 patients (03 events per 100 patient-years) who received 10 mg twice daily of XELJANZ The rate difference between XELJANZ doses (and the corresponding 95 confidence interval) was 0 (-05 05) events per 100 patient-years for 10 mg twice daily XELJANZ minus 5 mg twice daily XELJANZ

The median XELJANZ exposure prior to diagnosis of an opportunistic infection was 8 months (range from 41 to 698 days) [see Warnings and Precautions (51)]

Malignancy In the seven controlled trials during the 0 to 3 months exposure malignancies excluding NMSC were reported in 0 patients who received placebo and 2 patients (03 events per 100 patientshy

9

Reference ID 3213422

years) who received either XELJANZ 5 mg or 10 mg twice daily The rate difference between treatment groups (and the corresponding 95 confidence interval) was 03 (-01 07) events per 100 patient-years for the combined 5 mg and 10 mg twice daily XELJANZ group minus placebo

In the seven controlled trials during the 0 to 12 months exposure malignancies excluding NMSC were reported in 5 patients (04 events per 100 patient-years) who received 5 mg twice daily of XELJANZ and 7 patients (06 events per 100 patient-years) who received 10 mg twice daily of XELJANZ The rate difference between XELJANZ doses (and the corresponding 95 confidence interval) was 02 (-04 07) events per 100 patient-years for 10 mg twice daily XELJANZ minus 5 mg twice daily XELJANZ One of these malignancies was a case of lymphoma that occurred during the 0 to 12 month period in a patient treated with XELJANZ 10 mg twice daily

The most common types of malignancy including malignancies observed during the long-term extension were lung and breast cancer followed by gastric colorectal renal cell prostate cancer lymphoma and malignant melanoma [see Warnings and Precautions (52)]

Laboratory Tests

Lymphocytes In the controlled clinical trials confirmed decreases in lymphocyte counts below 500 cellsmm3

occurred in 004 of patients for the 5 mg twice daily and 10 mg twice daily XELJANZ groups combined during the first 3 months of exposure

Confirmed lymphocyte counts less than 500 cellsmm3 were associated with an increased incidence of treated and serious infections [see Warnings and Precautions (54)]

Neutrophils In the controlled clinical trials confirmed decreases in ANC below 1000 cellsmm3 occurred in 007 of patients for the 5 mg twice daily and 10 mg twice daily XELJANZ groups combined during the first 3 months of exposure

There were no confirmed decreases in ANC below 500 cellsmm3 observed in any treatment group

There was no clear relationship between neutropenia and the occurrence of serious infections

In the long-term safety population the pattern and incidence of confirmed decreases in ANC remained consistent with what was seen in the controlled clinical trials [see Warnings and Precautions (54)]

Liver Enzyme Tests Confirmed increases in liver enzymes greater than 3 times the upper limit of normal (3x ULN) were observed in patients treated with XELJANZ In patients experiencing liver enzyme elevation modification of treatment regimen such as reduction in the dose of concomitant DMARD interruption of XELJANZ or reduction in XELJANZ dose resulted in decrease or normalization of liver enzymes

In the controlled monotherapy trials (0-3 months) no differences in the incidence of ALT or AST elevations were observed between the placebo and XELJANZ 5 mg and 10 mg twice daily groups

10

Reference ID 3213422

In the controlled background DMARD trials (0-3 months) ALT elevations greater than 3x ULN were observed in 10 13 and 12 of patients receiving placebo 5 mg and 10 mg twice daily respectively In these trials AST elevations greater than 3x ULN were observed in 06 05 and 04 of patients receiving placebo 5 mg and 10 mg twice daily respectively

One case of drug-induced liver injury was reported in a patient treated with XELJANZ 10 mg twice daily for approximately 25 months The patient developed symptomatic elevations of AST and ALT greater than 3x ULN and bilirubin elevations greater than 2x ULN which required hospitalizations and a liver biopsy

Lipids In the controlled clinical trials dose-related elevations in lipid parameters (total cholesterol LDL cholesterol HDL cholesterol triglycerides) were observed at one month of exposure and remained stable thereafter Changes in lipid parameters during the first 3 months of exposure in the controlled clinical trials are summarized below

bull Mean LDL cholesterol increased by 15 in the XELJANZ 5 mg twice daily arm and 19 in the XELJANZ 10 mg twice daily arm

bull Mean HDL cholesterol increased by 10 in the XELJANZ 5 mg twice daily arm and 12 in the XELJANZ 10 mg twice daily arm

bull Mean LDLHDL ratios were essentially unchanged in XELJANZ-treated patients

In a controlled clinical trial elevations in LDL cholesterol and ApoB decreased to pretreatment levels in response to statin therapy

In the long-term safety population elevations in lipid parameters remained consistent with what was seen in the controlled clinical trials

11

Reference ID 3213422

Serum Creatinine In the controlled clinical trials dose-related elevations in serum creatinine were observed with XELJANZ treatment The mean increase in serum creatinine was lt01 mgdL in the 12-month pooled safety analysis however with increasing duration of exposure in the long-term extensions up to 2 of patients were discontinued from XELJANZ treatment due to the protocol-specified discontinuation criterion of an increase in creatinine by more than 50 of baseline The clinical significance of the observed serum creatinine elevations is unknown

Other Adverse Reactions Adverse reactions occurring in 2 or more of patients on 5 mg twice daily or 10 mg twice daily XELJANZ and at least 1 greater than that observed in patients on placebo with or without DMARD are summarized in Table 4

Table 4 Adverse Reactions Occurring in at Least 2 or More of Patients on 5 or 10 mg Twice Daily XELJANZ With or Without DMARD (0-3 months) and at Least 1 Greater Than That Observed in Patients on Placebo

XELJANZ 5 mg Twice Daily

XELJANZ 10 mg Twice Daily

Placebo

Preferred Term N = 1336

() N = 1349

() N = 809

()

Diarrhea 40 29 23

Nasopharyngitis 38 28 28

Upper respiratory tract infection 45 38 33

Headache 43 34 21

Hypertension 16 23 11

N reflects randomized and treated patients from the seven clinical trials

Other adverse reactions occurring in controlled and open-label extension studies included

Blood and lymphatic system disorders Anemia Metabolism and nutrition disorders Dehydration Psychiatric disorders Insomnia Nervous system disorders Paresthesia Respiratory thoracic and mediastinal disorders Dyspnea cough sinus congestion Gastrointestinal disorders Abdominal pain dyspepsia vomiting gastritis nausea Hepatobiliary disorders Hepatic steatosis Skin and subcutaneous tissue disorders Rash erythema pruritus Musculoskeletal connective tissue and bone disorders Musculoskeletal pain arthralgia tendonitis joint swelling General disorders and administration site conditions Pyrexia fatigue peripheral edema

12

Reference ID 3213422

7 DRUG INTERACTIONS

71 Potent CYP3A4 Inhibitors Tofacitinib exposure is increased when XELJANZ is coadministered with potent inhibitors of cytochrome P450 (CYP) 3A4 (eg ketoconazole) [see Dosage and Administration (21) and Figure 3]

72 Moderate CYP3A4 and Potent CYP2C19 Inhibitors Tofacitinib exposure is increased when XELJANZ is coadministered with medications that result in both moderate inhibition of CYP3A4 and potent inhibition of CYP2C19 (eg fluconazole) [see Dosage and Administration (21) and Figure 3]

73 Potent CYP3A4 Inducers Tofacitinib exposure is decreased when XELJANZ is coadministered with potent CYP3A4 inducers (eg rifampin) [see Dosage and Administration (21) and Figure 3]

74 Immunosuppressive Drugs There is a risk of added immunosuppression when XELJANZ is coadministered with potent immunosuppressive drugs (eg azathioprine tacrolimus cyclosporine) Combined use of multiple-dose XELJANZ with potent immunosuppressives has not been studied in rheumatoid arthritis

8 USE IN SPECIFIC POPULATIONS

81 Pregnancy Teratogenic effects Pregnancy Category C There are no adequate and well-controlled studies in pregnant women XELJANZ should be used during pregnancy only if the potential benefit justifies the potential risk to the fetus Tofacitinib has been shown to be fetocidal and teratogenic in rats and rabbits when given at exposures 146 times and 13 times respectively the maximum recommended human dose (MRHD)

In a rat embryofetal developmental study tofacitinib was teratogenic at exposure levels approximately 146 times the MRHD (on an AUC basis at oral doses of 100 mgkgday) Teratogenic effects consisted of external and soft tissue malformations of anasarca and membranous ventricular septal defects respectively and skeletal malformations or variations (absent cervical arch bent femur fibula humerus radius scapula tibia and ulna sternoschisis absent rib misshapen femur branched rib fused rib fused sternebra and hemicentric thoracic centrum) In addition there was an increase in post-implantation loss consisting of early and late resorptions resulting in a reduced number of viable fetuses Mean fetal body weight was reduced No developmental toxicity was observed in rats at exposure levels approximately 58 times the MRHD (on an AUC basis at oral doses of 30 mgkgday) In the rabbit embryofetal developmental study tofacitinib was teratogenic at exposure levels approximately 13 times the MRHD (on an AUC basis at oral doses of 30 mgkgday) in the absence of signs of maternal toxicity Teratogenic effects included thoracogastroschisis omphalocele membranous ventricular septal defects and cranialskeletal malformations (microstomia microphthalmia)

13

Reference ID 3213422

mid-line and tail defects In addition there was an increase in post-implantation loss associated with late resorptions No developmental toxicity was observed in rabbits at exposure levels approximately 3 times the MRHD (on an AUC basis at oral doses of 10 mgkgday)

Nonteratogenic effects In a peri- and postnatal rat study there were reductions in live litter size postnatal survival and pup body weights at exposure levels approximately 73 times the MRHD (on an AUC basis at oral doses of 50 mgkgday) There was no effect on behavioral and learning assessments sexual maturation or the ability of the F1 generation rats to mate and produce viable F2 generation fetuses in rats at exposure levels approximately 17 times the MRHD (on an AUC basis at oral doses of 10 mgkgday)

Pregnancy Registry To monitor the outcomes of pregnant women exposed to XELJANZ a pregnancy registry has been established Physicians are encouraged to register patients and pregnant women are encouraged to register themselves by calling 1-877-311-8972

83 Nursing Mothers Tofacitinib was secreted in milk of lactating rats It is not known whether tofacitinib is excreted in human milk Because many drugs are excreted in human milk and because of the potential for serious adverse reactions in nursing infants from tofacitinib a decision should be made whether to discontinue nursing or to discontinue the drug taking into account the importance of the drug for the mother

84 Pediatric Use The safety and effectiveness of XELJANZ in pediatric patients have not been established

85 Geriatric Use Of the 3315 patients who enrolled in Studies I to V a total of 505 rheumatoid arthritis patients were 65 years of age and older including 71 patients 75 years and older The frequency of serious infection among XELJANZ-treated subjects 65 years of age and older was higher than among those under the age of 65 As there is a higher incidence of infections in the elderly population in general caution should be used when treating the elderly

86 Hepatic Impairment No dose adjustment is required in patients with mild hepatic impairment XELJANZ dose should be reduced to 5 mg once daily in patients with moderate hepatic impairment The safety and efficacy of XELJANZ have not been studied in patients with severe hepatic impairment or in patients with positive hepatitis B virus or hepatitis C virus serology [see Dosage and Administration (21) and Warnings and Precautions (56)]

87 Renal Impairment No dose adjustment is required in patients with mild renal impairment XELJANZ dose should be reduced to 5 mg once daily in patients with moderate and severe renal impairment [see Dosage and Administration (21)] In clinical trials XELJANZ was not evaluated in rheumatoid arthritis patients with baseline creatinine clearance values (estimated by the Cockroft-Gault equation) less than 40 mLmin

14

Reference ID 3213422

10 OVERDOSAGE Signs Symptoms and Laboratory Findings of Acute Overdosage in Humans There is no experience with overdose of XELJANZ

Treatment or Management of Overdose Pharmacokinetic data up to and including a single dose of 100 mg in healthy volunteers indicate that more than 95 of the administered dose is expected to be eliminated within 24 hours

There is no specific antidote for overdose with XELJANZ In case of an overdose it is recommended that the patient be monitored for signs and symptoms of adverse reactions Patients who develop adverse reactions should receive appropriate treatment

11 DESCRIPTION XELJANZ is the citrate salt of tofacitinib a JAK inhibitor

Tofacitinib citrate is a white to off-white powder with the following chemical name (3R4R)-4shymethyl-3-(methyl-7H-pyrrolo [23-d]pyrimidin-4-ylamino)-szlig-oxo-1-piperidinepropanenitrile 2shyhydroxy-123-propanetricarboxylate (11) It is freely soluble in water

Tofacitinib citrate has a molecular weight of 5045 Daltons (or 3124 Daltons as the tofacitinib free base) and a molecular formula of C16H20N6ObullC6H8O7 The chemical structure of tofacitinib citrate is

NN

Me

Me

N

N N H

O N

HO2C CO2H

HO2C

OH bull

XELJANZ is supplied for oral administration as 5 mg tofacitinib (equivalent to 8 mg tofacitinib citrate) white round immediate-release film-coated tablet Each tablet of XELJANZ contains the appropriate amount of XELJANZ as a citrate salt and the following inactive ingredients microcrystalline cellulose lactose monohydrate croscarmellose sodium magnesium stearate HPMC 2910Hypromellose 6cP titanium dioxide macrogolPEG3350 and triacetin

12 CLINICAL PHARMACOLOGY

121 Mechanism of Action Tofacitinib is a Janus kinase (JAK) inhibitor JAKs are intracellular enzymes which transmit signals arising from cytokine or growth factor-receptor interactions on the cellular membrane to influence cellular processes of hematopoiesis and immune cell function Within the signaling pathway JAKs phosphorylate and activate Signal Transducers and Activators of Transcription (STATs) which modulate intracellular activity including gene expression Tofacitinib modulates

15

Reference ID 3213422

the signaling pathway at the point of JAKs preventing the phosphorylation and activation of STATs JAK enzymes transmit cytokine signaling through pairing of JAKs (eg JAK1JAK3 JAK1JAK2 JAK1TyK2 JAK2JAK2) Tofacitinib inhibited the in vitro activities of JAK1JAK2 JAK1JAK3 and JAK2JAK2 combinations with IC50 of 406 56 and 1377 nM respectively However the relevance of specific JAK combinations to therapeutic effectiveness is not known

122 Pharmacodynamics Treatment with XELJANZ was associated with dose-dependent reductions of circulating CD1656+ natural killer cells with estimated maximum reductions occurring at approximately 8shy10 weeks after initiation of therapy These changes generally resolved within 2-6 weeks after discontinuation of treatment Treatment with XELJANZ was associated with dose-dependent increases in B cell counts Changes in circulating T-lymphocyte counts and T-lymphocyte subsets (CD3+ CD4+ and CD8+) were small and inconsistent The clinical significance of these changes is unknown

Total serum IgG IgM and IgA levels after 6-month dosing in patients with rheumatoid arthritis were lower than placebo however changes were small and not dose-dependent

After treatment with XELJANZ in patients with rheumatoid arthritis rapid decreases in serum C-reactive protein (CRP) were observed and maintained throughout dosing Changes in CRP observed with XELJANZ treatment do not reverse fully within 2 weeks after discontinuation indicating a longer duration of pharmacodynamic activity compared to the pharmacokinetic half-life

123 Pharmacokinetics Following oral administration of XELJANZ peak plasma concentrations are reached within 05shy1 hour elimination half-life is ~3 hours and a dose-proportional increase in systemic exposure was observed in the therapeutic dose range Steady state concentrations are achieved in 24-48 hours with negligible accumulation after twice daily administration

Absorption The absolute oral bioavailability of tofacitinib is 74 Coadministration of XELJANZ with a high-fat meal resulted in no changes in AUC while Cmax was reduced by 32 In clinical trials XELJANZ was administered without regard to meals

Distribution After intravenous administration the volume of distribution is 87 L The protein binding of tofacitinib is ~40 Tofacitinib binds predominantly to albumin and does not appear to bind to 1-acid glycoprotein Tofacitinib distributes equally between red blood cells and plasma

Metabolism and Elimination Clearance mechanisms for tofacitinib are approximately 70 hepatic metabolism and 30 renal excretion of the parent drug The metabolism of tofacitinib is primarily mediated by CYP3A4 with minor contribution from CYP2C19 In a human radiolabeled study more than 65 of the total circulating radioactivity was accounted for by unchanged tofacitinib with the remaining

16

Reference ID 3213422

35 attributed to 8 metabolites each accounting for less than 8 of total radioactivity The pharmacologic activity of tofacitinib is attributed to the parent molecule

Pharmacokinetics in Rheumatoid Arthritis Patients Population PK analysis in rheumatoid arthritis patients indicated no clinically relevant change in tofacitinib exposure after accounting for differences in renal function (ie creatinine clearance) between patients based on age weight gender and race (Figure 1) An approximately linear relationship between body weight and volume of distribution was observed resulting in higher peak (Cmax) and lower trough (Cmin) concentrations in lighter patients However this difference is not considered to be clinically relevant The between-subject variability ( coefficient of variation) in AUC of tofacitinib is estimated to be approximately 27

Specific Populations The effect of renal and hepatic impairment and other intrinsic factors on the pharmacokinetics of tofacitinib is shown in Figure 1

17

Reference ID 3213422

Figure 1 Impact of Intrinsic Factors on Tofacitinib Pharmacokinetics

Intrinsic Factor

Weight = 40 kg

Weight = 140 kg

Age = 80 years

Female

Asian

Black

Hispanic

Renal Impairment (Mild)

Renal Impairment (Moderate)

Renal Impairment (Severe)

Hepatic Impairment (Mild)

Hepatic Impairment (Moderate)

PK

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

0

Ratio and 90 CI Recommendation

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

Reduce Dose to 5 mg Once Daily

Reduce Dose to 5 mg Once Daily

No Dose Adjustment

Reduce Dose to 5 mg Once Daily

05 1 15 2 25 3 35 4

Ratio relative to reference

Supplemental doses are not necessary in patients after dialysis

Reference values for weight age gender and race comparisons are 70 kg 55 years male and White respectively Reference groups for renal and hepatic impairment data are subjects with normal renal and hepatic function

Drug Interactions

Potential for XELJANZ to Influence the PK of Other Drugs In vitro studies indicate that tofacitinib does not significantly inhibit or induce the activity of the

18

Reference ID 3213422

major human drug-metabolizing CYPs (CYP1A2 CYP2B6 CYP2C8 CYP2C9 CYP2C19 CYP2D6 and CYP3A4) at concentrations exceeding 185 times the steady state Cmax of a 5 mg twice daily dose These in vitro results were confirmed by a human drug interaction study showing no changes in the PK of midazolam a highly sensitive CYP3A4 substrate when coadministered with XELJANZ

In rheumatoid arthritis patients the oral clearance of tofacitinib does not vary with time indicating that tofacitinib does not normalize CYP enzyme activity in rheumatoid arthritis patients Therefore coadministration with XELJANZ is not expected to result in clinically relevant increases in the metabolism of CYP substrates in rheumatoid arthritis patients

In vitro data indicate that the potential for tofacitinib to inhibit transporters such as Pshyglycoprotein organic anionic or cationic transporters at therapeutic concentrations is low

Dosing recommendations for coadministered drugs following administration with XELJANZ are shown in Figure 2

Figure 2 Impact of XELJANZ on PK of Other Drugs

Coadministered PK Drug

Methotrexate AUC

Cmax

CYP3A Substrate AUC Midazolam

Cmax

Oral ContraceptivesLevonorgestrel

AUC

Cmax

Ethinyl Estradiol AUC

Cmax

OCT amp MATE Substrate AUC Metformin

Cmax

Ratio and 90 CI Recommendation

No Dose Adjustment

No dose adjustment for CYP3A substrates such as midazolam

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

0 025 05 075 1 125 15 175 2

Ratio relative to reference

Note Reference group is administration of concomitant medication alone OCT = Organic Cationic Transporter MATE = Multidrug and Toxic Compound Extrusion

Potential for Other Drugs to Influence the PK of Tofacitinib Since tofacitinib is metabolized by CYP3A4 interaction with drugs that inhibit or induce CYP3A4 is likely Inhibitors of CYP2C19 alone or P-glycoprotein are unlikely to substantially alter the PK of tofacitinib Dosing recommendations for XELJANZ for administration with CYP inhibitors or inducers are shown in Figure 3

19

Reference ID 3213422

Figure 3 Impact of Other Drugs on PK of XELJANZ

Coadministered PK Drug

CYP3A Inhib itor AUC Ketoconazole

Cmax

CYP3A amp CYP2C19 Inhib itor AUC

Cmax Fluconazole

CYP Inducer Rifampin AUC

Cmax

Methotrexate AUC

Cmax

Tacrolimus AUC Cmax

Cyclosporine AUC

Cmax

Ratio and 90 CI Recommendation

Reduce XELJANZ Dose to 5 mg Once Daily

Reduce XELJANZ Dose to 5 mg Once Daily

May Decrease Efficacy

No Dose Adjustment

There is a risk of added immunosuppressionif XELJANZ is taken with Tacrolimus

There is a risk of added immunosuppressionif XELJANZ is taken with Cyclosporine

0 05 1 15 2 25

Ratio relative to reference

Note Reference group is administration of tofacitinib alone

13 NONCLINICAL TOXICOLOGY

131 Carcinogenesis Mutagenesis Impairment of Fertility In a 39-week toxicology study in monkeys tofacitinib at exposure levels approximately 6 times the MRHD (on an AUC basis at oral doses of 5 mgkg twice daily) produced lymphomas No lymphomas were observed in this study at exposure levels 1 times the MRHD (on an AUC basis at oral doses of 1 mgkg twice daily)

The carcinogenic potential of tofacitinib was assessed in 6-month rasH2 transgenic mouse carcinogenicity and 2-year rat carcinogenicity studies Tofacitinib at exposure levels approximately 34 times the MRHD (on an AUC basis at oral doses of 200 mgkgday) was not carcinogenic in mice

In the 24-month oral carcinogenicity study in Sprague-Dawley rats tofacitinib caused benign Leydig cell tumors hibernomas (malignancy of brown adipose tissue) and benign thymomas at doses greater than or equal to 30 mgkgday (approximately 42 times the exposure levels at the MRHD on an AUC basis) The relevance of benign Leydig cell tumors to human risk is not known

20

Reference ID 3213422

Tofacitinib was not mutagenic in the bacterial reverse mutation assay It was positive for clastogenicity in the in vitro chromosome aberration assay with human lymphocytes in the presence of metabolic enzymes but negative in the absence of metabolic enzymes Tofacitinib was negative in the in vivo rat micronucleus assay and in the in vitro CHO-HGPRT assay and the in vivo rat hepatocyte unscheduled DNA synthesis assay

In rats tofacitinib at exposure levels approximately 17 times the MRHD (on an AUC basis at oral doses of 10 mgkgday) reduced female fertility due to increased post-implantation loss There was no impairment of female rat fertility at exposure levels of tofacitinib equal to the MRHD (on an AUC basis at oral doses of 1 mgkgday) Tofacitinib exposure levels at approximately 133 times the MRHD (on an AUC basis at oral doses of 100 mgkgday) had no effect on male fertility sperm motility or sperm concentration

14 CLINICAL STUDIES The XELJANZ clinical development program included two dose-ranging trials and five confirmatory trials

DOSE-RANGING TRIALS Dose selection for XELJANZ was based on two pivotal dose-ranging trials

Dose-Ranging Study 1 was a 6-month monotherapy trial in 384 patients with active rheumatoid arthritis who had an inadequate response to a DMARD Patients who previously received adalimumab therapy were excluded Patients were randomized to 1 of 7 monotherapy treatments XELJANZ 1 3 5 10 or 15 mg twice daily adalimumab 40 mg subcutaneously every other week for 10 weeks followed by XELJANZ 5 mg twice daily for 3 months or placebo

Dose-Ranging Study 2 was a 6-month trial in which 507 patients with active rheumatoid arthritis who had an inadequate response to MTX alone received one of 6 dose regimens of XELJANZ (20 mg once daily 1 3 5 10 or 15 mg twice daily) or placebo added to background MTX

The results of XELJANZ-treated patients achieving ACR20 responses in Studies 1 and 2 are shown in Figure 4 Although a dose-response relationship was observed in Study 1 the proportion of patients with an ACR20 response did not clearly differ between the 10 mg and 15 mg doses Furthermore there was a smaller proportion of patients who responded to adalimumab monotherapy compared to those treated with XELJANZ doses 3 mg twice daily and greater In Study 2 a smaller proportion of patients achieved an ACR20 response in the placebo and XELJANZ 1 mg groups compared to patients treated with the other XELJANZ doses However there was no difference in the proportion of responders among patients treated with XELJANZ 3 5 10 15 mg twice daily or 20 mg once daily doses

21

Reference ID 3213422

Figure 4 Proportion of Patients with ACR20 Response at Month 3 in Dose-Ranging Studies 1 and 2

CONFIRMATORY TRIALS Study I was a 6-month monotherapy trial in which 610 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to a DMARD (nonbiologic or biologic) received XELJANZ 5 or 10 mg twice daily or placebo At the Month 3 visit all patients randomized to placebo treatment were advanced in a blinded fashion to a second predetermined treatment of XELJANZ 5 or 10 mg twice daily The primary endpoints at Month 3 were the proportion of patients who achieved an ACR20 response changes in Health Assessment Questionnaire ndash Disability Index (HAQ-DI) and rates of Disease Activity Score DAS28-4(ESR) less than 26

Study II was a 12-month trial in which 792 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to a nonbiologic DMARD received XELJANZ 5 or 10 mg twice daily or placebo added to background DMARD treatment (excluding potent immunosuppressive treatments such as azathioprine or cyclosporine) At the Month 3 visit nonresponding patients were advanced in a blinded fashion to a second predetermined treatment of XELJANZ 5 or 10 mg twice daily At the end of Month 6 all placebo patients were advanced to their second predetermined treatment in a blinded fashion The primary endpoints were the proportion of patients who achieved an ACR20 response at Month 6 changes in HAQ-DI at Month 3 and rates of DAS28-4(ESR) less than 26 at Month 6

Study III was a 12-month trial in 717 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to MTX Patients received XELJANZ 5 or 10 mg twice daily adalimumab 40 mg subcutaneously every other week or placebo added to background MTX

22

Reference ID 3213422

Placebo patients were advanced as in Study II The primary endpoints were the proportion of patients who achieved an ACR20 response at Month 6 HAQ-DI at Month 3 and DAS28-4(ESR) less than 26 at Month 6

Study IV is an ongoing 2-year trial with a planned analysis at 1 year in which 797 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to MTX received XELJANZ 5 or 10 mg twice daily or placebo added to background MTX Placebo patients were advanced as in Study II The primary endpoints were the proportion of patients who achieved an ACR20 response at Month 6 mean change from baseline in van der Heijde-modified total Sharp Score (mTSS) at Month 6 HAQ-DI at Month 3 and DAS28-4(ESR) less than 26 at Month 6

Study V was a 6-month trial in which 399 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to at least one approved TNF-inhibiting biologic agent received XELJANZ 5 or 10 mg twice daily or placebo added to background MTX At the Month 3 visit all patients randomized to placebo treatment were advanced in a blinded fashion to a second predetermined treatment of XELJANZ 5 or 10 mg twice daily The primary endpoints at Month 3 were the proportion of patients who achieved an ACR20 response HAQ-DI and DAS28-4(ESR) less than 26

Clinical Response The percentages of XELJANZ-treated patients achieving ACR20 ACR50 and ACR70 responses in Studies I IV and V are shown in Table 5 Similar results were observed with Studies II and III In all trials patients treated with either 5 or 10 mg twice daily XELJANZ had higher ACR20 ACR50 and ACR70 response rates versus placebo with or without background DMARD treatment at Month 3 and Month 6 Higher ACR20 response rates were observed within 2 weeks compared to placebo In the 12-month trials ACR response rates in XELJANZ-treated patients were consistent at 6 and 12 months

23

Reference ID 3213422

Table 5 Proportion of Patients with an ACR Response Percent of Patients

Monotherapy in Nonbiologic or Biologic DMARD Inadequate

Respondersc

MTX Inadequate Respondersd TNF Inhibitor Inadequate Responderse

Study I Study IV Study V

Na PBO

122

XELJANZ 5 mg Twice

Daily

243

XELJANZ 10 mg Twice Daily

245

PBO + MTX

160

XELJANZ 5 mg Twice

Daily + MTX

321

XELJANZ 10 mg Twice

Daily + MTX

316

PBO +

MTX

132

XELJANZ 5 mg Twice

Daily + MTX

133

XELJANZ 10 mg Twice

Daily + MTX

134 ACR20 Month 3 Month 6

26 NAb

59 69

65 70

27 25

55 50

67 62

24 NA

41 51

48 54

ACR50 Month 3 Month 6

12 NA

31 42

36 46

8 9

29 32

37 44

8 NA

26 37

28 30

ACR70 Month 3 Month 6

6 NA

15 22

20 29

3 1

11 14

17 23

2 NA

14 16

10 16

a N is number of randomized and treated patients b NA Not applicable as data for placebo treatment is not available beyond 3 months in Studies I and V due to placebo advancement c Inadequate response to at least one DMARD (biologic or nonbiologic) due to lack of efficacy or toxicity d Inadequate response to MTX defined as the presence of sufficient residual disease activity to meet the entry criteria e Inadequate response to a least one TNF inhibitor due to lack of efficacy andor intolerance

In Study IV a greater proportion of patients treated with XELJANZ 5 mg or 10 mg twice daily plus MTX achieved a low level of disease activity as measured by a DAS28-4(ESR) less than 26 at 6 months compared to those treated with MTX alone (Table 6)

24

Reference ID 3213422

Table 6 Proportion of Patients with DAS28-4(ESR) Less Than 26 with Number of Residual Active Joints Study IV DAS28-4(ESR) Less Than 26 Placebo + MTX

160

XELJANZ 5 mg Twice Daily + MTX

321

XELJANZ 10 mg Twice Daily + MTX

316 Proportion of responders at Month 6 (n) 1 (2) 6 (19) 13 (42)

Of responders proportion with 0 active joints (n)

50 (1) 42 (8) 36 (15)

Of responders proportion with 1 active joint (n) 0 5 (1) 17 (7) Of responders proportion with 2 active joints (n)

0 32 (6) 7 (3)

Of responders proportion with 3 or more active joints (n)

50 (1) 21 (4) 40 (17)

The results of the components of the ACR response criteria for Study IV are shown in Table 7 Similar results were observed in Studies I II III and V

Table 7 Components of ACR Response at 3 Months Study IV

XELJANZ

5 mg

Twice Daily + MTX

N=321

XELJANZ

10 mg

Twice Daily + MTX

N=316

Placebo + MTX

N=160

Component (mean) a Baseline Month 3a Baseline Month 3a Baseline Month 3a

Number of tender

joints 24 13 23 10 23 18

(0-68) (14) (14) (15) (12) (13) (14)

Number of swollen

joints 14 6 14 6 14 10

(0-66) (8) (8) (8) (7) (9) (9)

Painb 58

(23)

34

(23)

58

(24)

29

(22)

55

(24)

47

(24)

Patient global

assessmentb

58

(24)

35

(23)

57

(23)

29

(20)

54

(23)

47

(24)

Disability index

(HAQ-DI)c 141 099 140 084 132 119

(068) (065) (066) (064) (067) (068)

25

Reference ID 3213422

Physician global

assessmentb 59 30 58 24 56 43

(16) (19) (17) (17) (18) (22)

CRP (mgL) 153 71 171 44 137 146

(190) (191) (269) (86) (149) (187) aData shown is mean (Standard Deviation) at Month 3bVisual analog scale 0 = best 100 = worst cHealth Assessment Questionnaire Disability Index 0 = best 3 = worst 20 questions categories dressing and grooming arising eating walking hygiene reach grip and activities

The percent of ACR20 responders by visit for Study IV is shown in Figure 5 Similar responses were observed in Studies I II III and V

Figure 5 Percentage of ACR20 Responders by Visit for Study IV

Physical Function Response Improvement in physical functioning was measured by the HAQ-DI Patients receiving XELJANZ 5 and 10 mg twice daily demonstrated greater improvement from baseline in physical functioning compared to placebo at Month 3

The mean (95 CI) difference from placebo in HAQ-DI improvement from baseline at Month 3 in Study III was -022 (-035 -010) in patients receiving 5 mg XELJANZ twice daily and -032 (-044 -019) in patients receiving 10 mg XELJANZ twice daily Similar results were obtained in

26

Reference ID 3213422

Studies I II IV and V In the 12-month trials HAQ-DI results in XELJANZ-treated patients were consistent at 6 and 12 months

16 HOW SUPPLIEDSTORAGE AND HANDLING XELJANZ is provided as 5 mg tofacitinib (equivalent to 8 mg tofacitinib citrate) tablets White round immediate-release film-coated tablets debossed with ldquoPfizerrdquo on one side and ldquoJKI 5rdquo on the other side and available in

Bottles of 60 NDC 0069-1001-01 Bottles of 180 NDC 0069-1001-02

Storage and Handling Store at 20degC to 25degC (68degF to 77degF) [See USP Controlled Room Temperature]

Do not repackage

17 PATIENT COUNSELING INFORMATION See FDA-approved patient labeling (Medication Guide)

Inform patients of the availability of a Medication Guide and instruct them to read the Medication Guide prior to taking XELJANZ Instruct patients to take XELJANZ only as prescribed

This productrsquos label may have been updated For current full prescribing information please visit wwwpfizercom

LAB-0445-10

27

Reference ID 3213422

MEDICATION GUIDE

XELJANZ (ZELrsquo JANSrsquo) (tofacitinib)

Read this Medication Guide before you start taking XELJANZ and each time you get a refill There may be new information This Medication Guide does not take the place of talking to your healthcare provider about your medical condition or treatment

What is the most important information I should know about XELJANZ XELJANZ may cause serious side effects including

1 Serious infections

XELJANZ is a medicine that affects your immune system XELJANZ can lower the ability of your immune system to fight infections Some people have serious infections while taking XELJANZ including tuberculosis (TB) and infections caused by bacteria fungi or viruses that can spread throughout the body Some people have died from these infections Your healthcare provider should test you for TB before starting XELJANZ Your healthcare provider should monitor you closely for signs and symptoms of

TB infection during treatment with XELJANZ

You should not start taking XELJANZ if you have any kind of infection unless your healthcare provider tells you it is okay

Before starting XELJANZ tell your healthcare provider if you think you have an infection or have symptoms of an infection such as

o fever sweating or chills o warm red or painful skin o muscle aches or sores on your body o cough o diarrhea or stomach pain o shortness of breath o burning when you urinate o blood in phlegm or urinating more often o weight loss than normal

o feeling very tired are being treated for an infection get a lot of infections or have infections that keep coming back have diabetes HIV or a weak immune system People with these conditions

have a higher chance for infections have TB or have been in close contact with someone with TB live or have lived or have traveled to certain parts of the country (such as the

Ohio and Mississippi River valleys and the Southwest) where there is an increased chance for getting certain kinds of fungal infections (histoplasmosis coccidioidomycosis or blastomycosis) These infections may happen or become more severe if you use XELJANZ Ask your healthcare provider if you do not know if you have lived in an area where these infections are common

have or have had hepatitis B or C

28

Reference ID 3213422

After starting XELJANZ call your healthcare provider right away if you have any symptoms of an infection XELJANZ can make you more likely to get infections or make worse any infection that you have

2 Cancer and immune system problems

XELJANZ may increase your risk of certain cancers by changing the way your immune system works

Lymphoma and other cancers can happen in patients taking XELJANZ Tell your healthcare provider if you have ever had any type of cancer

Some people who have taken XELJANZ with certain other medicines to prevent kidney transplant rejection have had a problem with certain white blood cells growing out of control (Epstein Barr Virus-associated post transplant lymphoproliferative disorder)

3 Tears (perforation) in the stomach or intestines

Tell your healthcare provider if you have had diverticulitis (inflammation in parts of the large intestine) or ulcers in your stomach or intestines Some people taking XELJANZ get tears in their stomach or intestine This happens most often in people who also take nonsteroidal anti-inflammatory drugs (NSAIDs) corticosteroids or methotrexate

Tell your healthcare provider right away if you have fever and stomach-area pain that does not go away and a change in your bowel habits

4 Changes in certain laboratory test results Your healthcare provider should do blood tests before you start receiving XELJANZ and while you take XELJANZ to check for the following side effects

changes in lymphocyte counts Lymphocytes are white blood cells that help the body fight off infections

low neutrophil counts Neutrophils are white blood cells that help the body fight off infections

low red blood cell count This may mean that you have anemia which may make you feel weak and tired

Your healthcare provider should routinely check certain liver tests

You should not receive XELJANZ if your lymphocyte count neutrophil count or red blood cell count is too low or your liver tests are too high

Your healthcare provider may stop your XELJANZ treatment for a period of time if needed because of changes in these blood test results

29

Reference ID 3213422

You may also have changes in other laboratory tests such as your blood cholesterol levels Your healthcare provider should do blood tests to check your cholesterol levels 4 to 8 weeks after you start receiving XELJANZ and as needed after that Normal cholesterol levels are important to good heart health

See ldquoWhat are the possible side effects of XELJANZrdquo for more information about side effects

What is XELJANZ

XELJANZ is a prescription medicine called a Janus kinase (JAK) inhibitor XELJANZ is used to treat adults with moderately to severely active rheumatoid arthritis in which methotrexate did not work well

It is not known if XELJANZ is safe and effective in people with Hepatitis B or C

XELJANZ is not for people with severe liver problems

It is not known if XELJANZ is safe and effective in children

What should I tell my healthcare provider before taking XELJANZ

XELJANZ may not be right for you Before taking XELJANZ tell your healthcare provider if you have an infection See ldquoWhat is the most important information I should know

about XELJANZrdquo have liver problems have kidney problems have any stomach area (abdominal) pain or been diagnosed with diverticulitis or

ulcers in your stomach or intestines have had a reaction to tofacitinib or any of the ingredients in XELJANZ have recently received or are scheduled to receive a vaccine People who take

XELJANZ should not receive live vaccines People taking XELJANZ can receive non-live vaccines

have any other medical conditions plan to become pregnant or are pregnant It is not known if XELJANZ will harm

an unborn baby

Pregnancy Registry Pfizer has a registry for pregnant women who take XELJANZ The purpose of this registry is to check the health of the pregnant mother and her baby If you are pregnant or become pregnant while taking XELJANZ talk to your healthcare provider about how you can join this pregnancy registry or you may contact the registry at 1-877-311-8972 to enroll

plan to breastfeed or are breastfeeding You and your healthcare provider should decide if you will take XELJANZ or breastfeed You should not do both

30

Reference ID 3213422

Tell your healthcare provider about all the medicines you take including prescription and non-prescription medicines vitamins and herbal supplements XELJANZ and other medicines may affect each other causing side effects

Especially tell your healthcare provider if you take any other medicines to treat your rheumatoid arthritis You should not take

tocilizumab (Actemrareg) etanercept (Enbrelreg) adalimumab (Humirareg) infliximab (Remicadereg) rituximab (Rituxanreg) abatacept (Orenciareg) anakinra (Kineretreg) certolizumab (Cimziareg) golimumab (Simponireg) azathioprine cyclosporine or other immunosuppressive drugs while you are taking XELJANZ Taking XELJANZ with these medicines may increase your risk of infection

medicines that affect the way certain liver enzymes work Ask your healthcare provider if you are not sure if your medicine is one of these

Know the medicines you take Keep a list of them to show your healthcare provider and pharmacist when you get a new medicine

How should I take XELJANZ

Take XELJANZ as your healthcare provider tells you to take it

Take XELJANZ 2 times a day with or without food

If you take too much XELJANZ call your healthcare provider or go the nearest hospital emergency room right away

What are possible side effects of XELJANZ

XELJANZ may cause serious side effects including

See ldquoWhat is the most important information I should know about XELJANZrdquo

Hepatitis B or C activation infection in people who carry the virus in their blood If you are a carrier of the hepatitis B or C virus (viruses that affect the liver) the virus may become active while you use XELJANZ Your healthcare provider may do blood tests before you start treatment with XELJANZ and while you are using XELJANZ Tell your healthcare provider if you have any of the following symptoms of a possible hepatitis B or C infection

o feel very tired o fevers o skin or eyes look yellow o chills o little or no appetite o stomach discomfort o vomiting o muscle aches o clay-colored bowel o dark urine

movements o skin rash

31

Reference ID 3213422

Common side effects of XELJANZ include upper respiratory tract infections (common cold sinus infections) headache diarrhea nasal congestion sore throat and runny nose (nasopharyngitis)

Tell your healthcare provider if you have any side effect that bothers you or that does not go away

These are not all the possible side effects of XELJANZ For more information ask your healthcare provider or pharmacist

Call your doctor for medical advice about side effects You may report side effects to FDA at 1-800-FDA-1088

You may also report side effects to Pfizer at 1-800-438-1985

How should I store XELJANZ

Store XELJANZ at 68degF to 77degF (room temperature)

Safely throw away medicine that is out of date or no longer needed

Keep XELJANZ and all medicines out of the reach of children

General information about the safe and effective use of XELJANZ

Medicines are sometimes prescribed for purposes other than those listed in a Medication Guide Do not use XELJANZ for a condition for which it was not prescribed Do not give XELJANZ to other people even if they have the same symptoms you have It may harm them

This Medication Guide summarizes the most important information about XELJANZ If you would like more information talk to your healthcare provider You can ask your pharmacist or healthcare provider for information about XELJANZ that is written for health professionals

What are the ingredients in XELJANZ

Active ingredient tofacitinib citrate

Inactive ingredients microcrystalline cellulose lactose monohydrate croscarmellose sodium magnesium stearate HPMC 2910Hypromellose 6cP titanium dioxide macrogolPEG3350 and triacetin

32

Reference ID 3213422

This Medication Guide has been approved by the US Food and Drug Administration

LAB-0535-10 Issued November 2012

33

Reference ID 3213422

2 DOSAGE AND ADMINISTRATION XELJANZ is given orally with or without food

21 Rheumatoid Arthritis XELJANZ may be used as monotherapy or in combination with methotrexate or other nonbiologic disease modifying antirheumatic drugs (DMARDs) The recommended dose of XELJANZ is 5 mg twice daily Dose interruption is recommended for management of lymphopenia neutropenia and anemia

[see Dosage and Administration (23) Warnings and Precautions (54) and Adverse Reactions (61)]

XELJANZ dosage should be reduced to 5 mg once daily in patients with moderate or severe renal insufficiency with moderate hepatic impairment receiving potent inhibitors of Cytochrome P450 3A4 (CYP3A4) (eg ketoconazole) receiving one or more concomitant medications that result in both moderate inhibition of

CYP3A4 and potent inhibition of CYP2C19 (eg fluconazole)

22 General Considerations for Administration XELJANZ should not be used in patients with severe hepatic impairment It is recommended that XELJANZ not be initiated in patients with a lymphocyte count less

than 500 cellsmm3 an absolute neutrophil count (ANC) less than 1000 cellsmm3 or who have hemoglobin levels less than 9 gdL

Coadministration of XELJANZ with potent inducers of CYP3A4 (eg rifampin) may result in loss of or reduced clinical response to XELJANZ

23 Dosage Modifications XELJANZ treatment should be interrupted if a patient develops a serious infection until the infection is controlled

Table 1 Dose Adjustments for Lymphopenia Low Lymphocyte Count [see Warnings and Precautions (54)]

Lab Value (cellsmm3)

Recommendation

Lymphocyte count greater than or equal to 500

Maintain dose

Lymphocyte count less than 500

(Confirmed by repeat testing)

Discontinue XELJANZ

3

Reference ID 3213422

Table 2 Dose Adjustments for Neutropenia Low ANC [see Warnings and Precautions (54)]

Lab Value (cellsmm3)

Recommendation

ANC greater than 1000 Maintain dose

ANC 500-1000 For persistent decreases in this range interrupt dosing until ANC is greater than 1000

When ANC is greater than 1000 resume XELJANZ 5 mg twice daily ANC less than 500

(Confirmed by repeat testing)

Discontinue XELJANZ

Table 3 Dose Adjustments for Anemia Low Hemoglobin Value [see Warnings and Precautions (54)]

Lab Value (gdL)

Recommendation

Less than or equal to 2 gdL decrease and greater than or equal to 90 gdL

Maintain dose

Greater than 2 gdL decrease or less than 80 gdL

(Confirmed by repeat testing)

Interrupt the administration of XELJANZ until hemoglobin values have normalized

3 DOSAGE FORMS AND STRENGTHS XELJANZ is provided as 5 mg tofacitinib (equivalent to 8 mg tofacitinib citrate) tablets White round immediate-release film-coated tablets debossed with ldquoPfizerrdquo on one side and ldquoJKI 5rdquo on the other side

4 CONTRAINDICATIONS None

5 WARNINGS AND PRECAUTIONS

51 Serious Infections Serious and sometimes fatal infections due to bacterial mycobacterial invasive fungal viral or other opportunistic pathogens have been reported in rheumatoid arthritis patients receiving XELJANZ The most common serious infections reported with XELJANZ included pneumonia cellulitis herpes zoster and urinary tract infection [see Adverse Reactions (61)] Among opportunistic infections tuberculosis and other mycobacterial infections cryptococcus esophageal candidiasis pneumocystosis multidermatomal herpes zoster cytomegalovirus and BK virus were reported with XELJANZ Some patients have presented with disseminated rather than localized disease and were often taking concomitant immunomodulating agents such as methotrexate or corticosteroids

Other serious infections that were not reported in clinical studies may also occur (eg histoplasmosis coccidioidomycosis and listeriosis)

4

Reference ID 3213422

XELJANZ should not be initiated in patients with an active infection including localized infections The risks and benefits of treatment should be considered prior to initiating XELJANZ in patients bull with chronic or recurrent infection bull who have been exposed to tuberculosis bull with a history of a serious or an opportunistic infection bull who have resided or traveled in areas of endemic tuberculosis or endemic mycoses or bull with underlying conditions that may predispose them to infection

Patients should be closely monitored for the development of signs and symptoms of infection during and after treatment with XELJANZ XELJANZ should be interrupted if a patient develops a serious infection an opportunistic infection or sepsis A patient who develops a new infection during treatment with XELJANZ should undergo prompt and complete diagnostic testing appropriate for an immunocompromised patient appropriate antimicrobial therapy should be initiated and the patient should be closely monitored

Tuberculosis Patients should be evaluated and tested for latent or active infection prior to administration of XELJANZ

Anti-tuberculosis therapy should also be considered prior to administration of XELJANZ in patients with a past history of latent or active tuberculosis in whom an adequate course of treatment cannot be confirmed and for patients with a negative test for latent tuberculosis but who have risk factors for tuberculosis infection Consultation with a physician with expertise in the treatment of tuberculosis is recommended to aid in the decision about whether initiating antishytuberculosis therapy is appropriate for an individual patient

Patients should be closely monitored for the development of signs and symptoms of tuberculosis including patients who tested negative for latent tuberculosis infection prior to initiating therapy

Patients with latent tuberculosis should be treated with standard antimycobacterial therapy before administering XELJANZ

Viral Reactivation Viral reactivation including cases of herpes virus reactivation (eg herpes zoster) were observed in clinical studies with XELJANZ The impact of XELJANZ on chronic viral hepatitis reactivation is unknown Patients who screened positive for hepatitis B or C were excluded from clinical trials

52 Malignancy and Lymphoproliferative Disorder Consider the risks and benefits of XELJANZ treatment prior to initiating therapy in patients with a known malignancy other than a successfully treated non-melanoma skin cancer (NMSC) or when considering continuing XELJANZ in patients who develop a malignancy Malignancies were observed in clinical studies of XELJANZ [see Adverse Reactions (61)]

5

Reference ID 3213422

In the seven controlled rheumatoid arthritis clinical studies 11 solid cancers and one lymphoma were diagnosed in 3328 patients receiving XELJANZ with or without DMARD compared to 0 solid cancers and 0 lymphomas in 809 patients in the placebo with or without DMARD group during the first 12 months of exposure Lymphomas and solid cancers have also been observed in the long-term extension studies in rheumatoid arthritis patients treated with XELJANZ

In Phase 2B controlled dose-ranging trials in de-novo renal transplant patients all of whom received induction therapy with basiliximab high dose corticosteroids and mycophenolic acid products Epstein Barr Virus-associated post-transplant lymphoproliferative disorder was observed in 5 out of 218 patients treated with XELJANZ (23) compared to 0 out of 111 patients treated with cyclosporine

53 Gastrointestinal Perforations Events of gastrointestinal perforation have been reported in clinical studies with XELJANZ in rheumatoid arthritis patients although the role of JAK inhibition in these events is not known

XELJANZ should be used with caution in patients who may be at increased risk for gastrointestinal perforation (eg patients with a history of diverticulitis) Patients presenting with new onset abdominal symptoms should be evaluated promptly for early identification of gastrointestinal perforation [see Adverse Reactions (61)]

54 Laboratory Parameters

Lymphocytes Treatment with XELJANZ was associated with initial lymphocytosis at one month of exposure followed by a gradual decrease in mean lymphocyte counts below the baseline of approximately 10 during 12 months of therapy Lymphocyte counts less than 500 cellsmm3 were associated with an increased incidence of treated and serious infections

Avoid initiation of XELJANZ treatment in patients with a low lymphocyte count (ie less than 500 cellsmm3) In patients who develop a confirmed absolute lymphocyte count less than 500 cellsmm3 treatment with XELJANZ is not recommended

Monitor lymphocyte counts at baseline and every 3 months thereafter For recommended modifications based on lymphocyte counts see Dosage and Administration (23)

Neutrophils Treatment with XELJANZ was associated with an increased incidence of neutropenia (less than 2000 cellsmm3) compared to placebo

Avoid initiation of XELJANZ treatment in patients with a low neutrophil count (ie ANC less than 1000 cellsmm3) For patients who develop a persistent ANC of 500-1000 cellsmm3 interrupt XELJANZ dosing until ANC is greater than or equal to 1000 cellsmm3 In patients who develop an ANC less than 500 cellsmm3 treatment with XELJANZ is not recommended

6

Reference ID 3213422

Monitor neutrophil counts at baseline and after 4-8 weeks of treatment and every 3 months thereafter For recommended modifications based on ANC results see Dosage and Administration (23)

Hemoglobin Avoid initiation of XELJANZ treatment in patients with a low hemoglobin level (ie less than 9 gdL) Treatment with XELJANZ should be interrupted in patients who develop hemoglobin levels less than 8 gdL or whose hemoglobin level drops greater than 2 gdL on treatment

Monitor hemoglobin at baseline and after 4-8 weeks of treatment and every 3 months thereafter For recommended modifications based on hemoglobin results see Dosage and Administration (23)

Liver Enzymes Treatment with XELJANZ was associated with an increased incidence of liver enzyme elevation compared to placebo Most of these abnormalities occurred in studies with background DMARD (primarily methotrexate) therapy

Routine monitoring of liver tests and prompt investigation of the causes of liver enzyme elevations is recommended to identify potential cases of drug-induced liver injury If drug-induced liver injury is suspected the administration of XELJANZ should be interrupted until this diagnosis has been excluded

Lipids Treatment with XELJANZ was associated with increases in lipid parameters including total cholesterol low-density lipoprotein (LDL) cholesterol and high-density lipoprotein (HDL) cholesterol Maximum effects were generally observed within 6 weeks The effect of these lipid parameter elevations on cardiovascular morbidity and mortality has not been determined

Assessment of lipid parameters should be performed approximately 4-8 weeks following initiation of XELJANZ therapy

Manage patients according to clinical guidelines [eg National Cholesterol Educational Program (NCEP)] for the management of hyperlipidemia

55 Vaccinations No data are available on the response to vaccination or on the secondary transmission of infection by live vaccines to patients receiving XELJANZ Live vaccines should not be given concurrently with XELJANZ

Update immunizations in agreement with current immunization guidelines prior to initiating XELJANZ therapy

7

Reference ID 3213422

56 Hepatic Impairment Treatment with XELJANZ is not recommended in patients with severe hepatic impairment [see Adverse Reactions (61) and Use in Specific Populations (86)]

6 ADVERSE REACTIONS Because clinical studies are conducted under widely varying conditions adverse reaction rates observed in the clinical studies of a drug cannot be directly compared to rates in the clinical studies of another drug and may not predict the rates observed in a broader patient population in clinical practice

The following data includes two Phase 2 and five Phase 3 double-blind controlled multicenter trials In these trials patients were randomized to doses of XELJANZ 5 mg twice daily (292 patients) and 10 mg twice daily (306 patients) monotherapy XELJANZ 5 mg twice daily (1044 patients) and 10 mg twice daily (1043 patients) in combination with DMARDs (including methotrexate) and placebo (809 patients) All seven protocols included provisions for patients taking placebo to receive treatment with XELJANZ at Month 3 or Month 6 either by patient response (based on uncontrolled disease activity) or by design so that adverse events cannot always be unambiguously attributed to a given treatment Therefore some analyses that follow include patients who changed treatment by design or by patient response from placebo to XELJANZ in both the placebo and XELJANZ group of a given interval Comparisons between placebo and XELJANZ were based on the first 3 months of exposure and comparisons between XELJANZ 5 mg twice daily and XELJANZ 10 mg twice daily were based on the first 12 months of exposure

The long-term safety population includes all patients who participated in a double-blind controlled trial (including earlier development phase studies) and then participated in one of two long-term safety studies The design of the long-term safety studies allowed for modification of XELJANZ doses according to clinical judgment This limits the interpretation of the long-term safety data with respect to dose

61 Clinical Trial Experience The most common serious adverse reactions were serious infections [see Warnings and Precautions (51)]

The proportion of patients who discontinued treatment due to any adverse reaction during the 0 to 3 months exposure in the double-blind placebo-controlled trials was 4 for patients taking XELJANZ and 3 for placebo-treated patients

Overall Infections

In the seven controlled trials during the 0 to 3 months exposure the overall frequency of infections was 20 and 22 in the 5 mg twice daily and 10 mg twice daily groups respectively and 18 in the placebo group

The most commonly reported infections with XELJANZ were upper respiratory tract infections nasopharyngitis and urinary tract infections (4 3 and 2 of patients respectively)

8

Reference ID 3213422

Serious Infections In the seven controlled trials during the 0 to 3 months exposure serious infections were reported in 1 patient (05 events per 100 patient-years) who received placebo and 11 patients (17 events per 100 patient-years) who received XELJANZ 5 mg or 10 mg twice daily The rate difference between treatment groups (and the corresponding 95 confidence interval) was 11 (-04 25) events per 100 patient-years for the combined 5 mg twice daily and 10 mg twice daily XELJANZ group minus placebo

In the seven controlled trials during the 0 to 12 months exposure serious infections were reported in 34 patients (27 events per 100 patient-years) who received 5 mg twice daily of XELJANZ and 33 patients (27 events per 100 patient-years) who received 10 mg twice daily of XELJANZ The rate difference between XELJANZ doses (and the corresponding 95 confidence interval) was -01 (-13 12) events per 100 patient-years for 10 mg twice daily XELJANZ minus 5 mg twice daily XELJANZ

The most common serious infections included pneumonia cellulitis herpes zoster and urinary tract infection [see Warnings and Precautions (51)]

Tuberculosis In the seven controlled trials during the 0 to 3 months exposure tuberculosis was not reported in patients who received placebo 5 mg twice daily of XELJANZ or 10 mg twice daily of XELJANZ

In the seven controlled trials during the 0 to 12 months exposure tuberculosis was reported in 0 patients who received 5 mg twice daily of XELJANZ and 6 patients (05 events per 100 patient-years) who received 10 mg twice daily of XELJANZ The rate difference between XELJANZ doses (and the corresponding 95 confidence interval) was 05 (01 09) events per 100 patient-years for 10 mg twice daily XELJANZ minus 5 mg twice daily XELJANZ

Cases of disseminated tuberculosis were also reported The median XELJANZ exposure prior to diagnosis of tuberculosis was 10 months (range from 152 to 960 days) [see Warnings and Precautions (51)]

Opportunistic Infections (excluding tuberculosis) In the seven controlled trials during the 0 to 3 months exposure opportunistic infections were not reported in patients who received placebo 5 mg twice daily of XELJANZ or 10 mg twice daily of XELJANZ

In the seven controlled trials during the 0 to 12 months exposure opportunistic infections were reported in 4 patients (03 events per 100 patient-years) who received 5 mg twice daily of XELJANZ and 4 patients (03 events per 100 patient-years) who received 10 mg twice daily of XELJANZ The rate difference between XELJANZ doses (and the corresponding 95 confidence interval) was 0 (-05 05) events per 100 patient-years for 10 mg twice daily XELJANZ minus 5 mg twice daily XELJANZ

The median XELJANZ exposure prior to diagnosis of an opportunistic infection was 8 months (range from 41 to 698 days) [see Warnings and Precautions (51)]

Malignancy In the seven controlled trials during the 0 to 3 months exposure malignancies excluding NMSC were reported in 0 patients who received placebo and 2 patients (03 events per 100 patientshy

9

Reference ID 3213422

years) who received either XELJANZ 5 mg or 10 mg twice daily The rate difference between treatment groups (and the corresponding 95 confidence interval) was 03 (-01 07) events per 100 patient-years for the combined 5 mg and 10 mg twice daily XELJANZ group minus placebo

In the seven controlled trials during the 0 to 12 months exposure malignancies excluding NMSC were reported in 5 patients (04 events per 100 patient-years) who received 5 mg twice daily of XELJANZ and 7 patients (06 events per 100 patient-years) who received 10 mg twice daily of XELJANZ The rate difference between XELJANZ doses (and the corresponding 95 confidence interval) was 02 (-04 07) events per 100 patient-years for 10 mg twice daily XELJANZ minus 5 mg twice daily XELJANZ One of these malignancies was a case of lymphoma that occurred during the 0 to 12 month period in a patient treated with XELJANZ 10 mg twice daily

The most common types of malignancy including malignancies observed during the long-term extension were lung and breast cancer followed by gastric colorectal renal cell prostate cancer lymphoma and malignant melanoma [see Warnings and Precautions (52)]

Laboratory Tests

Lymphocytes In the controlled clinical trials confirmed decreases in lymphocyte counts below 500 cellsmm3

occurred in 004 of patients for the 5 mg twice daily and 10 mg twice daily XELJANZ groups combined during the first 3 months of exposure

Confirmed lymphocyte counts less than 500 cellsmm3 were associated with an increased incidence of treated and serious infections [see Warnings and Precautions (54)]

Neutrophils In the controlled clinical trials confirmed decreases in ANC below 1000 cellsmm3 occurred in 007 of patients for the 5 mg twice daily and 10 mg twice daily XELJANZ groups combined during the first 3 months of exposure

There were no confirmed decreases in ANC below 500 cellsmm3 observed in any treatment group

There was no clear relationship between neutropenia and the occurrence of serious infections

In the long-term safety population the pattern and incidence of confirmed decreases in ANC remained consistent with what was seen in the controlled clinical trials [see Warnings and Precautions (54)]

Liver Enzyme Tests Confirmed increases in liver enzymes greater than 3 times the upper limit of normal (3x ULN) were observed in patients treated with XELJANZ In patients experiencing liver enzyme elevation modification of treatment regimen such as reduction in the dose of concomitant DMARD interruption of XELJANZ or reduction in XELJANZ dose resulted in decrease or normalization of liver enzymes

In the controlled monotherapy trials (0-3 months) no differences in the incidence of ALT or AST elevations were observed between the placebo and XELJANZ 5 mg and 10 mg twice daily groups

10

Reference ID 3213422

In the controlled background DMARD trials (0-3 months) ALT elevations greater than 3x ULN were observed in 10 13 and 12 of patients receiving placebo 5 mg and 10 mg twice daily respectively In these trials AST elevations greater than 3x ULN were observed in 06 05 and 04 of patients receiving placebo 5 mg and 10 mg twice daily respectively

One case of drug-induced liver injury was reported in a patient treated with XELJANZ 10 mg twice daily for approximately 25 months The patient developed symptomatic elevations of AST and ALT greater than 3x ULN and bilirubin elevations greater than 2x ULN which required hospitalizations and a liver biopsy

Lipids In the controlled clinical trials dose-related elevations in lipid parameters (total cholesterol LDL cholesterol HDL cholesterol triglycerides) were observed at one month of exposure and remained stable thereafter Changes in lipid parameters during the first 3 months of exposure in the controlled clinical trials are summarized below

bull Mean LDL cholesterol increased by 15 in the XELJANZ 5 mg twice daily arm and 19 in the XELJANZ 10 mg twice daily arm

bull Mean HDL cholesterol increased by 10 in the XELJANZ 5 mg twice daily arm and 12 in the XELJANZ 10 mg twice daily arm

bull Mean LDLHDL ratios were essentially unchanged in XELJANZ-treated patients

In a controlled clinical trial elevations in LDL cholesterol and ApoB decreased to pretreatment levels in response to statin therapy

In the long-term safety population elevations in lipid parameters remained consistent with what was seen in the controlled clinical trials

11

Reference ID 3213422

Serum Creatinine In the controlled clinical trials dose-related elevations in serum creatinine were observed with XELJANZ treatment The mean increase in serum creatinine was lt01 mgdL in the 12-month pooled safety analysis however with increasing duration of exposure in the long-term extensions up to 2 of patients were discontinued from XELJANZ treatment due to the protocol-specified discontinuation criterion of an increase in creatinine by more than 50 of baseline The clinical significance of the observed serum creatinine elevations is unknown

Other Adverse Reactions Adverse reactions occurring in 2 or more of patients on 5 mg twice daily or 10 mg twice daily XELJANZ and at least 1 greater than that observed in patients on placebo with or without DMARD are summarized in Table 4

Table 4 Adverse Reactions Occurring in at Least 2 or More of Patients on 5 or 10 mg Twice Daily XELJANZ With or Without DMARD (0-3 months) and at Least 1 Greater Than That Observed in Patients on Placebo

XELJANZ 5 mg Twice Daily

XELJANZ 10 mg Twice Daily

Placebo

Preferred Term N = 1336

() N = 1349

() N = 809

()

Diarrhea 40 29 23

Nasopharyngitis 38 28 28

Upper respiratory tract infection 45 38 33

Headache 43 34 21

Hypertension 16 23 11

N reflects randomized and treated patients from the seven clinical trials

Other adverse reactions occurring in controlled and open-label extension studies included

Blood and lymphatic system disorders Anemia Metabolism and nutrition disorders Dehydration Psychiatric disorders Insomnia Nervous system disorders Paresthesia Respiratory thoracic and mediastinal disorders Dyspnea cough sinus congestion Gastrointestinal disorders Abdominal pain dyspepsia vomiting gastritis nausea Hepatobiliary disorders Hepatic steatosis Skin and subcutaneous tissue disorders Rash erythema pruritus Musculoskeletal connective tissue and bone disorders Musculoskeletal pain arthralgia tendonitis joint swelling General disorders and administration site conditions Pyrexia fatigue peripheral edema

12

Reference ID 3213422

7 DRUG INTERACTIONS

71 Potent CYP3A4 Inhibitors Tofacitinib exposure is increased when XELJANZ is coadministered with potent inhibitors of cytochrome P450 (CYP) 3A4 (eg ketoconazole) [see Dosage and Administration (21) and Figure 3]

72 Moderate CYP3A4 and Potent CYP2C19 Inhibitors Tofacitinib exposure is increased when XELJANZ is coadministered with medications that result in both moderate inhibition of CYP3A4 and potent inhibition of CYP2C19 (eg fluconazole) [see Dosage and Administration (21) and Figure 3]

73 Potent CYP3A4 Inducers Tofacitinib exposure is decreased when XELJANZ is coadministered with potent CYP3A4 inducers (eg rifampin) [see Dosage and Administration (21) and Figure 3]

74 Immunosuppressive Drugs There is a risk of added immunosuppression when XELJANZ is coadministered with potent immunosuppressive drugs (eg azathioprine tacrolimus cyclosporine) Combined use of multiple-dose XELJANZ with potent immunosuppressives has not been studied in rheumatoid arthritis

8 USE IN SPECIFIC POPULATIONS

81 Pregnancy Teratogenic effects Pregnancy Category C There are no adequate and well-controlled studies in pregnant women XELJANZ should be used during pregnancy only if the potential benefit justifies the potential risk to the fetus Tofacitinib has been shown to be fetocidal and teratogenic in rats and rabbits when given at exposures 146 times and 13 times respectively the maximum recommended human dose (MRHD)

In a rat embryofetal developmental study tofacitinib was teratogenic at exposure levels approximately 146 times the MRHD (on an AUC basis at oral doses of 100 mgkgday) Teratogenic effects consisted of external and soft tissue malformations of anasarca and membranous ventricular septal defects respectively and skeletal malformations or variations (absent cervical arch bent femur fibula humerus radius scapula tibia and ulna sternoschisis absent rib misshapen femur branched rib fused rib fused sternebra and hemicentric thoracic centrum) In addition there was an increase in post-implantation loss consisting of early and late resorptions resulting in a reduced number of viable fetuses Mean fetal body weight was reduced No developmental toxicity was observed in rats at exposure levels approximately 58 times the MRHD (on an AUC basis at oral doses of 30 mgkgday) In the rabbit embryofetal developmental study tofacitinib was teratogenic at exposure levels approximately 13 times the MRHD (on an AUC basis at oral doses of 30 mgkgday) in the absence of signs of maternal toxicity Teratogenic effects included thoracogastroschisis omphalocele membranous ventricular septal defects and cranialskeletal malformations (microstomia microphthalmia)

13

Reference ID 3213422

mid-line and tail defects In addition there was an increase in post-implantation loss associated with late resorptions No developmental toxicity was observed in rabbits at exposure levels approximately 3 times the MRHD (on an AUC basis at oral doses of 10 mgkgday)

Nonteratogenic effects In a peri- and postnatal rat study there were reductions in live litter size postnatal survival and pup body weights at exposure levels approximately 73 times the MRHD (on an AUC basis at oral doses of 50 mgkgday) There was no effect on behavioral and learning assessments sexual maturation or the ability of the F1 generation rats to mate and produce viable F2 generation fetuses in rats at exposure levels approximately 17 times the MRHD (on an AUC basis at oral doses of 10 mgkgday)

Pregnancy Registry To monitor the outcomes of pregnant women exposed to XELJANZ a pregnancy registry has been established Physicians are encouraged to register patients and pregnant women are encouraged to register themselves by calling 1-877-311-8972

83 Nursing Mothers Tofacitinib was secreted in milk of lactating rats It is not known whether tofacitinib is excreted in human milk Because many drugs are excreted in human milk and because of the potential for serious adverse reactions in nursing infants from tofacitinib a decision should be made whether to discontinue nursing or to discontinue the drug taking into account the importance of the drug for the mother

84 Pediatric Use The safety and effectiveness of XELJANZ in pediatric patients have not been established

85 Geriatric Use Of the 3315 patients who enrolled in Studies I to V a total of 505 rheumatoid arthritis patients were 65 years of age and older including 71 patients 75 years and older The frequency of serious infection among XELJANZ-treated subjects 65 years of age and older was higher than among those under the age of 65 As there is a higher incidence of infections in the elderly population in general caution should be used when treating the elderly

86 Hepatic Impairment No dose adjustment is required in patients with mild hepatic impairment XELJANZ dose should be reduced to 5 mg once daily in patients with moderate hepatic impairment The safety and efficacy of XELJANZ have not been studied in patients with severe hepatic impairment or in patients with positive hepatitis B virus or hepatitis C virus serology [see Dosage and Administration (21) and Warnings and Precautions (56)]

87 Renal Impairment No dose adjustment is required in patients with mild renal impairment XELJANZ dose should be reduced to 5 mg once daily in patients with moderate and severe renal impairment [see Dosage and Administration (21)] In clinical trials XELJANZ was not evaluated in rheumatoid arthritis patients with baseline creatinine clearance values (estimated by the Cockroft-Gault equation) less than 40 mLmin

14

Reference ID 3213422

10 OVERDOSAGE Signs Symptoms and Laboratory Findings of Acute Overdosage in Humans There is no experience with overdose of XELJANZ

Treatment or Management of Overdose Pharmacokinetic data up to and including a single dose of 100 mg in healthy volunteers indicate that more than 95 of the administered dose is expected to be eliminated within 24 hours

There is no specific antidote for overdose with XELJANZ In case of an overdose it is recommended that the patient be monitored for signs and symptoms of adverse reactions Patients who develop adverse reactions should receive appropriate treatment

11 DESCRIPTION XELJANZ is the citrate salt of tofacitinib a JAK inhibitor

Tofacitinib citrate is a white to off-white powder with the following chemical name (3R4R)-4shymethyl-3-(methyl-7H-pyrrolo [23-d]pyrimidin-4-ylamino)-szlig-oxo-1-piperidinepropanenitrile 2shyhydroxy-123-propanetricarboxylate (11) It is freely soluble in water

Tofacitinib citrate has a molecular weight of 5045 Daltons (or 3124 Daltons as the tofacitinib free base) and a molecular formula of C16H20N6ObullC6H8O7 The chemical structure of tofacitinib citrate is

NN

Me

Me

N

N N H

O N

HO2C CO2H

HO2C

OH bull

XELJANZ is supplied for oral administration as 5 mg tofacitinib (equivalent to 8 mg tofacitinib citrate) white round immediate-release film-coated tablet Each tablet of XELJANZ contains the appropriate amount of XELJANZ as a citrate salt and the following inactive ingredients microcrystalline cellulose lactose monohydrate croscarmellose sodium magnesium stearate HPMC 2910Hypromellose 6cP titanium dioxide macrogolPEG3350 and triacetin

12 CLINICAL PHARMACOLOGY

121 Mechanism of Action Tofacitinib is a Janus kinase (JAK) inhibitor JAKs are intracellular enzymes which transmit signals arising from cytokine or growth factor-receptor interactions on the cellular membrane to influence cellular processes of hematopoiesis and immune cell function Within the signaling pathway JAKs phosphorylate and activate Signal Transducers and Activators of Transcription (STATs) which modulate intracellular activity including gene expression Tofacitinib modulates

15

Reference ID 3213422

the signaling pathway at the point of JAKs preventing the phosphorylation and activation of STATs JAK enzymes transmit cytokine signaling through pairing of JAKs (eg JAK1JAK3 JAK1JAK2 JAK1TyK2 JAK2JAK2) Tofacitinib inhibited the in vitro activities of JAK1JAK2 JAK1JAK3 and JAK2JAK2 combinations with IC50 of 406 56 and 1377 nM respectively However the relevance of specific JAK combinations to therapeutic effectiveness is not known

122 Pharmacodynamics Treatment with XELJANZ was associated with dose-dependent reductions of circulating CD1656+ natural killer cells with estimated maximum reductions occurring at approximately 8shy10 weeks after initiation of therapy These changes generally resolved within 2-6 weeks after discontinuation of treatment Treatment with XELJANZ was associated with dose-dependent increases in B cell counts Changes in circulating T-lymphocyte counts and T-lymphocyte subsets (CD3+ CD4+ and CD8+) were small and inconsistent The clinical significance of these changes is unknown

Total serum IgG IgM and IgA levels after 6-month dosing in patients with rheumatoid arthritis were lower than placebo however changes were small and not dose-dependent

After treatment with XELJANZ in patients with rheumatoid arthritis rapid decreases in serum C-reactive protein (CRP) were observed and maintained throughout dosing Changes in CRP observed with XELJANZ treatment do not reverse fully within 2 weeks after discontinuation indicating a longer duration of pharmacodynamic activity compared to the pharmacokinetic half-life

123 Pharmacokinetics Following oral administration of XELJANZ peak plasma concentrations are reached within 05shy1 hour elimination half-life is ~3 hours and a dose-proportional increase in systemic exposure was observed in the therapeutic dose range Steady state concentrations are achieved in 24-48 hours with negligible accumulation after twice daily administration

Absorption The absolute oral bioavailability of tofacitinib is 74 Coadministration of XELJANZ with a high-fat meal resulted in no changes in AUC while Cmax was reduced by 32 In clinical trials XELJANZ was administered without regard to meals

Distribution After intravenous administration the volume of distribution is 87 L The protein binding of tofacitinib is ~40 Tofacitinib binds predominantly to albumin and does not appear to bind to 1-acid glycoprotein Tofacitinib distributes equally between red blood cells and plasma

Metabolism and Elimination Clearance mechanisms for tofacitinib are approximately 70 hepatic metabolism and 30 renal excretion of the parent drug The metabolism of tofacitinib is primarily mediated by CYP3A4 with minor contribution from CYP2C19 In a human radiolabeled study more than 65 of the total circulating radioactivity was accounted for by unchanged tofacitinib with the remaining

16

Reference ID 3213422

35 attributed to 8 metabolites each accounting for less than 8 of total radioactivity The pharmacologic activity of tofacitinib is attributed to the parent molecule

Pharmacokinetics in Rheumatoid Arthritis Patients Population PK analysis in rheumatoid arthritis patients indicated no clinically relevant change in tofacitinib exposure after accounting for differences in renal function (ie creatinine clearance) between patients based on age weight gender and race (Figure 1) An approximately linear relationship between body weight and volume of distribution was observed resulting in higher peak (Cmax) and lower trough (Cmin) concentrations in lighter patients However this difference is not considered to be clinically relevant The between-subject variability ( coefficient of variation) in AUC of tofacitinib is estimated to be approximately 27

Specific Populations The effect of renal and hepatic impairment and other intrinsic factors on the pharmacokinetics of tofacitinib is shown in Figure 1

17

Reference ID 3213422

Figure 1 Impact of Intrinsic Factors on Tofacitinib Pharmacokinetics

Intrinsic Factor

Weight = 40 kg

Weight = 140 kg

Age = 80 years

Female

Asian

Black

Hispanic

Renal Impairment (Mild)

Renal Impairment (Moderate)

Renal Impairment (Severe)

Hepatic Impairment (Mild)

Hepatic Impairment (Moderate)

PK

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

0

Ratio and 90 CI Recommendation

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

Reduce Dose to 5 mg Once Daily

Reduce Dose to 5 mg Once Daily

No Dose Adjustment

Reduce Dose to 5 mg Once Daily

05 1 15 2 25 3 35 4

Ratio relative to reference

Supplemental doses are not necessary in patients after dialysis

Reference values for weight age gender and race comparisons are 70 kg 55 years male and White respectively Reference groups for renal and hepatic impairment data are subjects with normal renal and hepatic function

Drug Interactions

Potential for XELJANZ to Influence the PK of Other Drugs In vitro studies indicate that tofacitinib does not significantly inhibit or induce the activity of the

18

Reference ID 3213422

major human drug-metabolizing CYPs (CYP1A2 CYP2B6 CYP2C8 CYP2C9 CYP2C19 CYP2D6 and CYP3A4) at concentrations exceeding 185 times the steady state Cmax of a 5 mg twice daily dose These in vitro results were confirmed by a human drug interaction study showing no changes in the PK of midazolam a highly sensitive CYP3A4 substrate when coadministered with XELJANZ

In rheumatoid arthritis patients the oral clearance of tofacitinib does not vary with time indicating that tofacitinib does not normalize CYP enzyme activity in rheumatoid arthritis patients Therefore coadministration with XELJANZ is not expected to result in clinically relevant increases in the metabolism of CYP substrates in rheumatoid arthritis patients

In vitro data indicate that the potential for tofacitinib to inhibit transporters such as Pshyglycoprotein organic anionic or cationic transporters at therapeutic concentrations is low

Dosing recommendations for coadministered drugs following administration with XELJANZ are shown in Figure 2

Figure 2 Impact of XELJANZ on PK of Other Drugs

Coadministered PK Drug

Methotrexate AUC

Cmax

CYP3A Substrate AUC Midazolam

Cmax

Oral ContraceptivesLevonorgestrel

AUC

Cmax

Ethinyl Estradiol AUC

Cmax

OCT amp MATE Substrate AUC Metformin

Cmax

Ratio and 90 CI Recommendation

No Dose Adjustment

No dose adjustment for CYP3A substrates such as midazolam

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

0 025 05 075 1 125 15 175 2

Ratio relative to reference

Note Reference group is administration of concomitant medication alone OCT = Organic Cationic Transporter MATE = Multidrug and Toxic Compound Extrusion

Potential for Other Drugs to Influence the PK of Tofacitinib Since tofacitinib is metabolized by CYP3A4 interaction with drugs that inhibit or induce CYP3A4 is likely Inhibitors of CYP2C19 alone or P-glycoprotein are unlikely to substantially alter the PK of tofacitinib Dosing recommendations for XELJANZ for administration with CYP inhibitors or inducers are shown in Figure 3

19

Reference ID 3213422

Figure 3 Impact of Other Drugs on PK of XELJANZ

Coadministered PK Drug

CYP3A Inhib itor AUC Ketoconazole

Cmax

CYP3A amp CYP2C19 Inhib itor AUC

Cmax Fluconazole

CYP Inducer Rifampin AUC

Cmax

Methotrexate AUC

Cmax

Tacrolimus AUC Cmax

Cyclosporine AUC

Cmax

Ratio and 90 CI Recommendation

Reduce XELJANZ Dose to 5 mg Once Daily

Reduce XELJANZ Dose to 5 mg Once Daily

May Decrease Efficacy

No Dose Adjustment

There is a risk of added immunosuppressionif XELJANZ is taken with Tacrolimus

There is a risk of added immunosuppressionif XELJANZ is taken with Cyclosporine

0 05 1 15 2 25

Ratio relative to reference

Note Reference group is administration of tofacitinib alone

13 NONCLINICAL TOXICOLOGY

131 Carcinogenesis Mutagenesis Impairment of Fertility In a 39-week toxicology study in monkeys tofacitinib at exposure levels approximately 6 times the MRHD (on an AUC basis at oral doses of 5 mgkg twice daily) produced lymphomas No lymphomas were observed in this study at exposure levels 1 times the MRHD (on an AUC basis at oral doses of 1 mgkg twice daily)

The carcinogenic potential of tofacitinib was assessed in 6-month rasH2 transgenic mouse carcinogenicity and 2-year rat carcinogenicity studies Tofacitinib at exposure levels approximately 34 times the MRHD (on an AUC basis at oral doses of 200 mgkgday) was not carcinogenic in mice

In the 24-month oral carcinogenicity study in Sprague-Dawley rats tofacitinib caused benign Leydig cell tumors hibernomas (malignancy of brown adipose tissue) and benign thymomas at doses greater than or equal to 30 mgkgday (approximately 42 times the exposure levels at the MRHD on an AUC basis) The relevance of benign Leydig cell tumors to human risk is not known

20

Reference ID 3213422

Tofacitinib was not mutagenic in the bacterial reverse mutation assay It was positive for clastogenicity in the in vitro chromosome aberration assay with human lymphocytes in the presence of metabolic enzymes but negative in the absence of metabolic enzymes Tofacitinib was negative in the in vivo rat micronucleus assay and in the in vitro CHO-HGPRT assay and the in vivo rat hepatocyte unscheduled DNA synthesis assay

In rats tofacitinib at exposure levels approximately 17 times the MRHD (on an AUC basis at oral doses of 10 mgkgday) reduced female fertility due to increased post-implantation loss There was no impairment of female rat fertility at exposure levels of tofacitinib equal to the MRHD (on an AUC basis at oral doses of 1 mgkgday) Tofacitinib exposure levels at approximately 133 times the MRHD (on an AUC basis at oral doses of 100 mgkgday) had no effect on male fertility sperm motility or sperm concentration

14 CLINICAL STUDIES The XELJANZ clinical development program included two dose-ranging trials and five confirmatory trials

DOSE-RANGING TRIALS Dose selection for XELJANZ was based on two pivotal dose-ranging trials

Dose-Ranging Study 1 was a 6-month monotherapy trial in 384 patients with active rheumatoid arthritis who had an inadequate response to a DMARD Patients who previously received adalimumab therapy were excluded Patients were randomized to 1 of 7 monotherapy treatments XELJANZ 1 3 5 10 or 15 mg twice daily adalimumab 40 mg subcutaneously every other week for 10 weeks followed by XELJANZ 5 mg twice daily for 3 months or placebo

Dose-Ranging Study 2 was a 6-month trial in which 507 patients with active rheumatoid arthritis who had an inadequate response to MTX alone received one of 6 dose regimens of XELJANZ (20 mg once daily 1 3 5 10 or 15 mg twice daily) or placebo added to background MTX

The results of XELJANZ-treated patients achieving ACR20 responses in Studies 1 and 2 are shown in Figure 4 Although a dose-response relationship was observed in Study 1 the proportion of patients with an ACR20 response did not clearly differ between the 10 mg and 15 mg doses Furthermore there was a smaller proportion of patients who responded to adalimumab monotherapy compared to those treated with XELJANZ doses 3 mg twice daily and greater In Study 2 a smaller proportion of patients achieved an ACR20 response in the placebo and XELJANZ 1 mg groups compared to patients treated with the other XELJANZ doses However there was no difference in the proportion of responders among patients treated with XELJANZ 3 5 10 15 mg twice daily or 20 mg once daily doses

21

Reference ID 3213422

Figure 4 Proportion of Patients with ACR20 Response at Month 3 in Dose-Ranging Studies 1 and 2

CONFIRMATORY TRIALS Study I was a 6-month monotherapy trial in which 610 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to a DMARD (nonbiologic or biologic) received XELJANZ 5 or 10 mg twice daily or placebo At the Month 3 visit all patients randomized to placebo treatment were advanced in a blinded fashion to a second predetermined treatment of XELJANZ 5 or 10 mg twice daily The primary endpoints at Month 3 were the proportion of patients who achieved an ACR20 response changes in Health Assessment Questionnaire ndash Disability Index (HAQ-DI) and rates of Disease Activity Score DAS28-4(ESR) less than 26

Study II was a 12-month trial in which 792 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to a nonbiologic DMARD received XELJANZ 5 or 10 mg twice daily or placebo added to background DMARD treatment (excluding potent immunosuppressive treatments such as azathioprine or cyclosporine) At the Month 3 visit nonresponding patients were advanced in a blinded fashion to a second predetermined treatment of XELJANZ 5 or 10 mg twice daily At the end of Month 6 all placebo patients were advanced to their second predetermined treatment in a blinded fashion The primary endpoints were the proportion of patients who achieved an ACR20 response at Month 6 changes in HAQ-DI at Month 3 and rates of DAS28-4(ESR) less than 26 at Month 6

Study III was a 12-month trial in 717 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to MTX Patients received XELJANZ 5 or 10 mg twice daily adalimumab 40 mg subcutaneously every other week or placebo added to background MTX

22

Reference ID 3213422

Placebo patients were advanced as in Study II The primary endpoints were the proportion of patients who achieved an ACR20 response at Month 6 HAQ-DI at Month 3 and DAS28-4(ESR) less than 26 at Month 6

Study IV is an ongoing 2-year trial with a planned analysis at 1 year in which 797 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to MTX received XELJANZ 5 or 10 mg twice daily or placebo added to background MTX Placebo patients were advanced as in Study II The primary endpoints were the proportion of patients who achieved an ACR20 response at Month 6 mean change from baseline in van der Heijde-modified total Sharp Score (mTSS) at Month 6 HAQ-DI at Month 3 and DAS28-4(ESR) less than 26 at Month 6

Study V was a 6-month trial in which 399 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to at least one approved TNF-inhibiting biologic agent received XELJANZ 5 or 10 mg twice daily or placebo added to background MTX At the Month 3 visit all patients randomized to placebo treatment were advanced in a blinded fashion to a second predetermined treatment of XELJANZ 5 or 10 mg twice daily The primary endpoints at Month 3 were the proportion of patients who achieved an ACR20 response HAQ-DI and DAS28-4(ESR) less than 26

Clinical Response The percentages of XELJANZ-treated patients achieving ACR20 ACR50 and ACR70 responses in Studies I IV and V are shown in Table 5 Similar results were observed with Studies II and III In all trials patients treated with either 5 or 10 mg twice daily XELJANZ had higher ACR20 ACR50 and ACR70 response rates versus placebo with or without background DMARD treatment at Month 3 and Month 6 Higher ACR20 response rates were observed within 2 weeks compared to placebo In the 12-month trials ACR response rates in XELJANZ-treated patients were consistent at 6 and 12 months

23

Reference ID 3213422

Table 5 Proportion of Patients with an ACR Response Percent of Patients

Monotherapy in Nonbiologic or Biologic DMARD Inadequate

Respondersc

MTX Inadequate Respondersd TNF Inhibitor Inadequate Responderse

Study I Study IV Study V

Na PBO

122

XELJANZ 5 mg Twice

Daily

243

XELJANZ 10 mg Twice Daily

245

PBO + MTX

160

XELJANZ 5 mg Twice

Daily + MTX

321

XELJANZ 10 mg Twice

Daily + MTX

316

PBO +

MTX

132

XELJANZ 5 mg Twice

Daily + MTX

133

XELJANZ 10 mg Twice

Daily + MTX

134 ACR20 Month 3 Month 6

26 NAb

59 69

65 70

27 25

55 50

67 62

24 NA

41 51

48 54

ACR50 Month 3 Month 6

12 NA

31 42

36 46

8 9

29 32

37 44

8 NA

26 37

28 30

ACR70 Month 3 Month 6

6 NA

15 22

20 29

3 1

11 14

17 23

2 NA

14 16

10 16

a N is number of randomized and treated patients b NA Not applicable as data for placebo treatment is not available beyond 3 months in Studies I and V due to placebo advancement c Inadequate response to at least one DMARD (biologic or nonbiologic) due to lack of efficacy or toxicity d Inadequate response to MTX defined as the presence of sufficient residual disease activity to meet the entry criteria e Inadequate response to a least one TNF inhibitor due to lack of efficacy andor intolerance

In Study IV a greater proportion of patients treated with XELJANZ 5 mg or 10 mg twice daily plus MTX achieved a low level of disease activity as measured by a DAS28-4(ESR) less than 26 at 6 months compared to those treated with MTX alone (Table 6)

24

Reference ID 3213422

Table 6 Proportion of Patients with DAS28-4(ESR) Less Than 26 with Number of Residual Active Joints Study IV DAS28-4(ESR) Less Than 26 Placebo + MTX

160

XELJANZ 5 mg Twice Daily + MTX

321

XELJANZ 10 mg Twice Daily + MTX

316 Proportion of responders at Month 6 (n) 1 (2) 6 (19) 13 (42)

Of responders proportion with 0 active joints (n)

50 (1) 42 (8) 36 (15)

Of responders proportion with 1 active joint (n) 0 5 (1) 17 (7) Of responders proportion with 2 active joints (n)

0 32 (6) 7 (3)

Of responders proportion with 3 or more active joints (n)

50 (1) 21 (4) 40 (17)

The results of the components of the ACR response criteria for Study IV are shown in Table 7 Similar results were observed in Studies I II III and V

Table 7 Components of ACR Response at 3 Months Study IV

XELJANZ

5 mg

Twice Daily + MTX

N=321

XELJANZ

10 mg

Twice Daily + MTX

N=316

Placebo + MTX

N=160

Component (mean) a Baseline Month 3a Baseline Month 3a Baseline Month 3a

Number of tender

joints 24 13 23 10 23 18

(0-68) (14) (14) (15) (12) (13) (14)

Number of swollen

joints 14 6 14 6 14 10

(0-66) (8) (8) (8) (7) (9) (9)

Painb 58

(23)

34

(23)

58

(24)

29

(22)

55

(24)

47

(24)

Patient global

assessmentb

58

(24)

35

(23)

57

(23)

29

(20)

54

(23)

47

(24)

Disability index

(HAQ-DI)c 141 099 140 084 132 119

(068) (065) (066) (064) (067) (068)

25

Reference ID 3213422

Physician global

assessmentb 59 30 58 24 56 43

(16) (19) (17) (17) (18) (22)

CRP (mgL) 153 71 171 44 137 146

(190) (191) (269) (86) (149) (187) aData shown is mean (Standard Deviation) at Month 3bVisual analog scale 0 = best 100 = worst cHealth Assessment Questionnaire Disability Index 0 = best 3 = worst 20 questions categories dressing and grooming arising eating walking hygiene reach grip and activities

The percent of ACR20 responders by visit for Study IV is shown in Figure 5 Similar responses were observed in Studies I II III and V

Figure 5 Percentage of ACR20 Responders by Visit for Study IV

Physical Function Response Improvement in physical functioning was measured by the HAQ-DI Patients receiving XELJANZ 5 and 10 mg twice daily demonstrated greater improvement from baseline in physical functioning compared to placebo at Month 3

The mean (95 CI) difference from placebo in HAQ-DI improvement from baseline at Month 3 in Study III was -022 (-035 -010) in patients receiving 5 mg XELJANZ twice daily and -032 (-044 -019) in patients receiving 10 mg XELJANZ twice daily Similar results were obtained in

26

Reference ID 3213422

Studies I II IV and V In the 12-month trials HAQ-DI results in XELJANZ-treated patients were consistent at 6 and 12 months

16 HOW SUPPLIEDSTORAGE AND HANDLING XELJANZ is provided as 5 mg tofacitinib (equivalent to 8 mg tofacitinib citrate) tablets White round immediate-release film-coated tablets debossed with ldquoPfizerrdquo on one side and ldquoJKI 5rdquo on the other side and available in

Bottles of 60 NDC 0069-1001-01 Bottles of 180 NDC 0069-1001-02

Storage and Handling Store at 20degC to 25degC (68degF to 77degF) [See USP Controlled Room Temperature]

Do not repackage

17 PATIENT COUNSELING INFORMATION See FDA-approved patient labeling (Medication Guide)

Inform patients of the availability of a Medication Guide and instruct them to read the Medication Guide prior to taking XELJANZ Instruct patients to take XELJANZ only as prescribed

This productrsquos label may have been updated For current full prescribing information please visit wwwpfizercom

LAB-0445-10

27

Reference ID 3213422

MEDICATION GUIDE

XELJANZ (ZELrsquo JANSrsquo) (tofacitinib)

Read this Medication Guide before you start taking XELJANZ and each time you get a refill There may be new information This Medication Guide does not take the place of talking to your healthcare provider about your medical condition or treatment

What is the most important information I should know about XELJANZ XELJANZ may cause serious side effects including

1 Serious infections

XELJANZ is a medicine that affects your immune system XELJANZ can lower the ability of your immune system to fight infections Some people have serious infections while taking XELJANZ including tuberculosis (TB) and infections caused by bacteria fungi or viruses that can spread throughout the body Some people have died from these infections Your healthcare provider should test you for TB before starting XELJANZ Your healthcare provider should monitor you closely for signs and symptoms of

TB infection during treatment with XELJANZ

You should not start taking XELJANZ if you have any kind of infection unless your healthcare provider tells you it is okay

Before starting XELJANZ tell your healthcare provider if you think you have an infection or have symptoms of an infection such as

o fever sweating or chills o warm red or painful skin o muscle aches or sores on your body o cough o diarrhea or stomach pain o shortness of breath o burning when you urinate o blood in phlegm or urinating more often o weight loss than normal

o feeling very tired are being treated for an infection get a lot of infections or have infections that keep coming back have diabetes HIV or a weak immune system People with these conditions

have a higher chance for infections have TB or have been in close contact with someone with TB live or have lived or have traveled to certain parts of the country (such as the

Ohio and Mississippi River valleys and the Southwest) where there is an increased chance for getting certain kinds of fungal infections (histoplasmosis coccidioidomycosis or blastomycosis) These infections may happen or become more severe if you use XELJANZ Ask your healthcare provider if you do not know if you have lived in an area where these infections are common

have or have had hepatitis B or C

28

Reference ID 3213422

After starting XELJANZ call your healthcare provider right away if you have any symptoms of an infection XELJANZ can make you more likely to get infections or make worse any infection that you have

2 Cancer and immune system problems

XELJANZ may increase your risk of certain cancers by changing the way your immune system works

Lymphoma and other cancers can happen in patients taking XELJANZ Tell your healthcare provider if you have ever had any type of cancer

Some people who have taken XELJANZ with certain other medicines to prevent kidney transplant rejection have had a problem with certain white blood cells growing out of control (Epstein Barr Virus-associated post transplant lymphoproliferative disorder)

3 Tears (perforation) in the stomach or intestines

Tell your healthcare provider if you have had diverticulitis (inflammation in parts of the large intestine) or ulcers in your stomach or intestines Some people taking XELJANZ get tears in their stomach or intestine This happens most often in people who also take nonsteroidal anti-inflammatory drugs (NSAIDs) corticosteroids or methotrexate

Tell your healthcare provider right away if you have fever and stomach-area pain that does not go away and a change in your bowel habits

4 Changes in certain laboratory test results Your healthcare provider should do blood tests before you start receiving XELJANZ and while you take XELJANZ to check for the following side effects

changes in lymphocyte counts Lymphocytes are white blood cells that help the body fight off infections

low neutrophil counts Neutrophils are white blood cells that help the body fight off infections

low red blood cell count This may mean that you have anemia which may make you feel weak and tired

Your healthcare provider should routinely check certain liver tests

You should not receive XELJANZ if your lymphocyte count neutrophil count or red blood cell count is too low or your liver tests are too high

Your healthcare provider may stop your XELJANZ treatment for a period of time if needed because of changes in these blood test results

29

Reference ID 3213422

You may also have changes in other laboratory tests such as your blood cholesterol levels Your healthcare provider should do blood tests to check your cholesterol levels 4 to 8 weeks after you start receiving XELJANZ and as needed after that Normal cholesterol levels are important to good heart health

See ldquoWhat are the possible side effects of XELJANZrdquo for more information about side effects

What is XELJANZ

XELJANZ is a prescription medicine called a Janus kinase (JAK) inhibitor XELJANZ is used to treat adults with moderately to severely active rheumatoid arthritis in which methotrexate did not work well

It is not known if XELJANZ is safe and effective in people with Hepatitis B or C

XELJANZ is not for people with severe liver problems

It is not known if XELJANZ is safe and effective in children

What should I tell my healthcare provider before taking XELJANZ

XELJANZ may not be right for you Before taking XELJANZ tell your healthcare provider if you have an infection See ldquoWhat is the most important information I should know

about XELJANZrdquo have liver problems have kidney problems have any stomach area (abdominal) pain or been diagnosed with diverticulitis or

ulcers in your stomach or intestines have had a reaction to tofacitinib or any of the ingredients in XELJANZ have recently received or are scheduled to receive a vaccine People who take

XELJANZ should not receive live vaccines People taking XELJANZ can receive non-live vaccines

have any other medical conditions plan to become pregnant or are pregnant It is not known if XELJANZ will harm

an unborn baby

Pregnancy Registry Pfizer has a registry for pregnant women who take XELJANZ The purpose of this registry is to check the health of the pregnant mother and her baby If you are pregnant or become pregnant while taking XELJANZ talk to your healthcare provider about how you can join this pregnancy registry or you may contact the registry at 1-877-311-8972 to enroll

plan to breastfeed or are breastfeeding You and your healthcare provider should decide if you will take XELJANZ or breastfeed You should not do both

30

Reference ID 3213422

Tell your healthcare provider about all the medicines you take including prescription and non-prescription medicines vitamins and herbal supplements XELJANZ and other medicines may affect each other causing side effects

Especially tell your healthcare provider if you take any other medicines to treat your rheumatoid arthritis You should not take

tocilizumab (Actemrareg) etanercept (Enbrelreg) adalimumab (Humirareg) infliximab (Remicadereg) rituximab (Rituxanreg) abatacept (Orenciareg) anakinra (Kineretreg) certolizumab (Cimziareg) golimumab (Simponireg) azathioprine cyclosporine or other immunosuppressive drugs while you are taking XELJANZ Taking XELJANZ with these medicines may increase your risk of infection

medicines that affect the way certain liver enzymes work Ask your healthcare provider if you are not sure if your medicine is one of these

Know the medicines you take Keep a list of them to show your healthcare provider and pharmacist when you get a new medicine

How should I take XELJANZ

Take XELJANZ as your healthcare provider tells you to take it

Take XELJANZ 2 times a day with or without food

If you take too much XELJANZ call your healthcare provider or go the nearest hospital emergency room right away

What are possible side effects of XELJANZ

XELJANZ may cause serious side effects including

See ldquoWhat is the most important information I should know about XELJANZrdquo

Hepatitis B or C activation infection in people who carry the virus in their blood If you are a carrier of the hepatitis B or C virus (viruses that affect the liver) the virus may become active while you use XELJANZ Your healthcare provider may do blood tests before you start treatment with XELJANZ and while you are using XELJANZ Tell your healthcare provider if you have any of the following symptoms of a possible hepatitis B or C infection

o feel very tired o fevers o skin or eyes look yellow o chills o little or no appetite o stomach discomfort o vomiting o muscle aches o clay-colored bowel o dark urine

movements o skin rash

31

Reference ID 3213422

Common side effects of XELJANZ include upper respiratory tract infections (common cold sinus infections) headache diarrhea nasal congestion sore throat and runny nose (nasopharyngitis)

Tell your healthcare provider if you have any side effect that bothers you or that does not go away

These are not all the possible side effects of XELJANZ For more information ask your healthcare provider or pharmacist

Call your doctor for medical advice about side effects You may report side effects to FDA at 1-800-FDA-1088

You may also report side effects to Pfizer at 1-800-438-1985

How should I store XELJANZ

Store XELJANZ at 68degF to 77degF (room temperature)

Safely throw away medicine that is out of date or no longer needed

Keep XELJANZ and all medicines out of the reach of children

General information about the safe and effective use of XELJANZ

Medicines are sometimes prescribed for purposes other than those listed in a Medication Guide Do not use XELJANZ for a condition for which it was not prescribed Do not give XELJANZ to other people even if they have the same symptoms you have It may harm them

This Medication Guide summarizes the most important information about XELJANZ If you would like more information talk to your healthcare provider You can ask your pharmacist or healthcare provider for information about XELJANZ that is written for health professionals

What are the ingredients in XELJANZ

Active ingredient tofacitinib citrate

Inactive ingredients microcrystalline cellulose lactose monohydrate croscarmellose sodium magnesium stearate HPMC 2910Hypromellose 6cP titanium dioxide macrogolPEG3350 and triacetin

32

Reference ID 3213422

This Medication Guide has been approved by the US Food and Drug Administration

LAB-0535-10 Issued November 2012

33

Reference ID 3213422

Table 2 Dose Adjustments for Neutropenia Low ANC [see Warnings and Precautions (54)]

Lab Value (cellsmm3)

Recommendation

ANC greater than 1000 Maintain dose

ANC 500-1000 For persistent decreases in this range interrupt dosing until ANC is greater than 1000

When ANC is greater than 1000 resume XELJANZ 5 mg twice daily ANC less than 500

(Confirmed by repeat testing)

Discontinue XELJANZ

Table 3 Dose Adjustments for Anemia Low Hemoglobin Value [see Warnings and Precautions (54)]

Lab Value (gdL)

Recommendation

Less than or equal to 2 gdL decrease and greater than or equal to 90 gdL

Maintain dose

Greater than 2 gdL decrease or less than 80 gdL

(Confirmed by repeat testing)

Interrupt the administration of XELJANZ until hemoglobin values have normalized

3 DOSAGE FORMS AND STRENGTHS XELJANZ is provided as 5 mg tofacitinib (equivalent to 8 mg tofacitinib citrate) tablets White round immediate-release film-coated tablets debossed with ldquoPfizerrdquo on one side and ldquoJKI 5rdquo on the other side

4 CONTRAINDICATIONS None

5 WARNINGS AND PRECAUTIONS

51 Serious Infections Serious and sometimes fatal infections due to bacterial mycobacterial invasive fungal viral or other opportunistic pathogens have been reported in rheumatoid arthritis patients receiving XELJANZ The most common serious infections reported with XELJANZ included pneumonia cellulitis herpes zoster and urinary tract infection [see Adverse Reactions (61)] Among opportunistic infections tuberculosis and other mycobacterial infections cryptococcus esophageal candidiasis pneumocystosis multidermatomal herpes zoster cytomegalovirus and BK virus were reported with XELJANZ Some patients have presented with disseminated rather than localized disease and were often taking concomitant immunomodulating agents such as methotrexate or corticosteroids

Other serious infections that were not reported in clinical studies may also occur (eg histoplasmosis coccidioidomycosis and listeriosis)

4

Reference ID 3213422

XELJANZ should not be initiated in patients with an active infection including localized infections The risks and benefits of treatment should be considered prior to initiating XELJANZ in patients bull with chronic or recurrent infection bull who have been exposed to tuberculosis bull with a history of a serious or an opportunistic infection bull who have resided or traveled in areas of endemic tuberculosis or endemic mycoses or bull with underlying conditions that may predispose them to infection

Patients should be closely monitored for the development of signs and symptoms of infection during and after treatment with XELJANZ XELJANZ should be interrupted if a patient develops a serious infection an opportunistic infection or sepsis A patient who develops a new infection during treatment with XELJANZ should undergo prompt and complete diagnostic testing appropriate for an immunocompromised patient appropriate antimicrobial therapy should be initiated and the patient should be closely monitored

Tuberculosis Patients should be evaluated and tested for latent or active infection prior to administration of XELJANZ

Anti-tuberculosis therapy should also be considered prior to administration of XELJANZ in patients with a past history of latent or active tuberculosis in whom an adequate course of treatment cannot be confirmed and for patients with a negative test for latent tuberculosis but who have risk factors for tuberculosis infection Consultation with a physician with expertise in the treatment of tuberculosis is recommended to aid in the decision about whether initiating antishytuberculosis therapy is appropriate for an individual patient

Patients should be closely monitored for the development of signs and symptoms of tuberculosis including patients who tested negative for latent tuberculosis infection prior to initiating therapy

Patients with latent tuberculosis should be treated with standard antimycobacterial therapy before administering XELJANZ

Viral Reactivation Viral reactivation including cases of herpes virus reactivation (eg herpes zoster) were observed in clinical studies with XELJANZ The impact of XELJANZ on chronic viral hepatitis reactivation is unknown Patients who screened positive for hepatitis B or C were excluded from clinical trials

52 Malignancy and Lymphoproliferative Disorder Consider the risks and benefits of XELJANZ treatment prior to initiating therapy in patients with a known malignancy other than a successfully treated non-melanoma skin cancer (NMSC) or when considering continuing XELJANZ in patients who develop a malignancy Malignancies were observed in clinical studies of XELJANZ [see Adverse Reactions (61)]

5

Reference ID 3213422

In the seven controlled rheumatoid arthritis clinical studies 11 solid cancers and one lymphoma were diagnosed in 3328 patients receiving XELJANZ with or without DMARD compared to 0 solid cancers and 0 lymphomas in 809 patients in the placebo with or without DMARD group during the first 12 months of exposure Lymphomas and solid cancers have also been observed in the long-term extension studies in rheumatoid arthritis patients treated with XELJANZ

In Phase 2B controlled dose-ranging trials in de-novo renal transplant patients all of whom received induction therapy with basiliximab high dose corticosteroids and mycophenolic acid products Epstein Barr Virus-associated post-transplant lymphoproliferative disorder was observed in 5 out of 218 patients treated with XELJANZ (23) compared to 0 out of 111 patients treated with cyclosporine

53 Gastrointestinal Perforations Events of gastrointestinal perforation have been reported in clinical studies with XELJANZ in rheumatoid arthritis patients although the role of JAK inhibition in these events is not known

XELJANZ should be used with caution in patients who may be at increased risk for gastrointestinal perforation (eg patients with a history of diverticulitis) Patients presenting with new onset abdominal symptoms should be evaluated promptly for early identification of gastrointestinal perforation [see Adverse Reactions (61)]

54 Laboratory Parameters

Lymphocytes Treatment with XELJANZ was associated with initial lymphocytosis at one month of exposure followed by a gradual decrease in mean lymphocyte counts below the baseline of approximately 10 during 12 months of therapy Lymphocyte counts less than 500 cellsmm3 were associated with an increased incidence of treated and serious infections

Avoid initiation of XELJANZ treatment in patients with a low lymphocyte count (ie less than 500 cellsmm3) In patients who develop a confirmed absolute lymphocyte count less than 500 cellsmm3 treatment with XELJANZ is not recommended

Monitor lymphocyte counts at baseline and every 3 months thereafter For recommended modifications based on lymphocyte counts see Dosage and Administration (23)

Neutrophils Treatment with XELJANZ was associated with an increased incidence of neutropenia (less than 2000 cellsmm3) compared to placebo

Avoid initiation of XELJANZ treatment in patients with a low neutrophil count (ie ANC less than 1000 cellsmm3) For patients who develop a persistent ANC of 500-1000 cellsmm3 interrupt XELJANZ dosing until ANC is greater than or equal to 1000 cellsmm3 In patients who develop an ANC less than 500 cellsmm3 treatment with XELJANZ is not recommended

6

Reference ID 3213422

Monitor neutrophil counts at baseline and after 4-8 weeks of treatment and every 3 months thereafter For recommended modifications based on ANC results see Dosage and Administration (23)

Hemoglobin Avoid initiation of XELJANZ treatment in patients with a low hemoglobin level (ie less than 9 gdL) Treatment with XELJANZ should be interrupted in patients who develop hemoglobin levels less than 8 gdL or whose hemoglobin level drops greater than 2 gdL on treatment

Monitor hemoglobin at baseline and after 4-8 weeks of treatment and every 3 months thereafter For recommended modifications based on hemoglobin results see Dosage and Administration (23)

Liver Enzymes Treatment with XELJANZ was associated with an increased incidence of liver enzyme elevation compared to placebo Most of these abnormalities occurred in studies with background DMARD (primarily methotrexate) therapy

Routine monitoring of liver tests and prompt investigation of the causes of liver enzyme elevations is recommended to identify potential cases of drug-induced liver injury If drug-induced liver injury is suspected the administration of XELJANZ should be interrupted until this diagnosis has been excluded

Lipids Treatment with XELJANZ was associated with increases in lipid parameters including total cholesterol low-density lipoprotein (LDL) cholesterol and high-density lipoprotein (HDL) cholesterol Maximum effects were generally observed within 6 weeks The effect of these lipid parameter elevations on cardiovascular morbidity and mortality has not been determined

Assessment of lipid parameters should be performed approximately 4-8 weeks following initiation of XELJANZ therapy

Manage patients according to clinical guidelines [eg National Cholesterol Educational Program (NCEP)] for the management of hyperlipidemia

55 Vaccinations No data are available on the response to vaccination or on the secondary transmission of infection by live vaccines to patients receiving XELJANZ Live vaccines should not be given concurrently with XELJANZ

Update immunizations in agreement with current immunization guidelines prior to initiating XELJANZ therapy

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Reference ID 3213422

56 Hepatic Impairment Treatment with XELJANZ is not recommended in patients with severe hepatic impairment [see Adverse Reactions (61) and Use in Specific Populations (86)]

6 ADVERSE REACTIONS Because clinical studies are conducted under widely varying conditions adverse reaction rates observed in the clinical studies of a drug cannot be directly compared to rates in the clinical studies of another drug and may not predict the rates observed in a broader patient population in clinical practice

The following data includes two Phase 2 and five Phase 3 double-blind controlled multicenter trials In these trials patients were randomized to doses of XELJANZ 5 mg twice daily (292 patients) and 10 mg twice daily (306 patients) monotherapy XELJANZ 5 mg twice daily (1044 patients) and 10 mg twice daily (1043 patients) in combination with DMARDs (including methotrexate) and placebo (809 patients) All seven protocols included provisions for patients taking placebo to receive treatment with XELJANZ at Month 3 or Month 6 either by patient response (based on uncontrolled disease activity) or by design so that adverse events cannot always be unambiguously attributed to a given treatment Therefore some analyses that follow include patients who changed treatment by design or by patient response from placebo to XELJANZ in both the placebo and XELJANZ group of a given interval Comparisons between placebo and XELJANZ were based on the first 3 months of exposure and comparisons between XELJANZ 5 mg twice daily and XELJANZ 10 mg twice daily were based on the first 12 months of exposure

The long-term safety population includes all patients who participated in a double-blind controlled trial (including earlier development phase studies) and then participated in one of two long-term safety studies The design of the long-term safety studies allowed for modification of XELJANZ doses according to clinical judgment This limits the interpretation of the long-term safety data with respect to dose

61 Clinical Trial Experience The most common serious adverse reactions were serious infections [see Warnings and Precautions (51)]

The proportion of patients who discontinued treatment due to any adverse reaction during the 0 to 3 months exposure in the double-blind placebo-controlled trials was 4 for patients taking XELJANZ and 3 for placebo-treated patients

Overall Infections

In the seven controlled trials during the 0 to 3 months exposure the overall frequency of infections was 20 and 22 in the 5 mg twice daily and 10 mg twice daily groups respectively and 18 in the placebo group

The most commonly reported infections with XELJANZ were upper respiratory tract infections nasopharyngitis and urinary tract infections (4 3 and 2 of patients respectively)

8

Reference ID 3213422

Serious Infections In the seven controlled trials during the 0 to 3 months exposure serious infections were reported in 1 patient (05 events per 100 patient-years) who received placebo and 11 patients (17 events per 100 patient-years) who received XELJANZ 5 mg or 10 mg twice daily The rate difference between treatment groups (and the corresponding 95 confidence interval) was 11 (-04 25) events per 100 patient-years for the combined 5 mg twice daily and 10 mg twice daily XELJANZ group minus placebo

In the seven controlled trials during the 0 to 12 months exposure serious infections were reported in 34 patients (27 events per 100 patient-years) who received 5 mg twice daily of XELJANZ and 33 patients (27 events per 100 patient-years) who received 10 mg twice daily of XELJANZ The rate difference between XELJANZ doses (and the corresponding 95 confidence interval) was -01 (-13 12) events per 100 patient-years for 10 mg twice daily XELJANZ minus 5 mg twice daily XELJANZ

The most common serious infections included pneumonia cellulitis herpes zoster and urinary tract infection [see Warnings and Precautions (51)]

Tuberculosis In the seven controlled trials during the 0 to 3 months exposure tuberculosis was not reported in patients who received placebo 5 mg twice daily of XELJANZ or 10 mg twice daily of XELJANZ

In the seven controlled trials during the 0 to 12 months exposure tuberculosis was reported in 0 patients who received 5 mg twice daily of XELJANZ and 6 patients (05 events per 100 patient-years) who received 10 mg twice daily of XELJANZ The rate difference between XELJANZ doses (and the corresponding 95 confidence interval) was 05 (01 09) events per 100 patient-years for 10 mg twice daily XELJANZ minus 5 mg twice daily XELJANZ

Cases of disseminated tuberculosis were also reported The median XELJANZ exposure prior to diagnosis of tuberculosis was 10 months (range from 152 to 960 days) [see Warnings and Precautions (51)]

Opportunistic Infections (excluding tuberculosis) In the seven controlled trials during the 0 to 3 months exposure opportunistic infections were not reported in patients who received placebo 5 mg twice daily of XELJANZ or 10 mg twice daily of XELJANZ

In the seven controlled trials during the 0 to 12 months exposure opportunistic infections were reported in 4 patients (03 events per 100 patient-years) who received 5 mg twice daily of XELJANZ and 4 patients (03 events per 100 patient-years) who received 10 mg twice daily of XELJANZ The rate difference between XELJANZ doses (and the corresponding 95 confidence interval) was 0 (-05 05) events per 100 patient-years for 10 mg twice daily XELJANZ minus 5 mg twice daily XELJANZ

The median XELJANZ exposure prior to diagnosis of an opportunistic infection was 8 months (range from 41 to 698 days) [see Warnings and Precautions (51)]

Malignancy In the seven controlled trials during the 0 to 3 months exposure malignancies excluding NMSC were reported in 0 patients who received placebo and 2 patients (03 events per 100 patientshy

9

Reference ID 3213422

years) who received either XELJANZ 5 mg or 10 mg twice daily The rate difference between treatment groups (and the corresponding 95 confidence interval) was 03 (-01 07) events per 100 patient-years for the combined 5 mg and 10 mg twice daily XELJANZ group minus placebo

In the seven controlled trials during the 0 to 12 months exposure malignancies excluding NMSC were reported in 5 patients (04 events per 100 patient-years) who received 5 mg twice daily of XELJANZ and 7 patients (06 events per 100 patient-years) who received 10 mg twice daily of XELJANZ The rate difference between XELJANZ doses (and the corresponding 95 confidence interval) was 02 (-04 07) events per 100 patient-years for 10 mg twice daily XELJANZ minus 5 mg twice daily XELJANZ One of these malignancies was a case of lymphoma that occurred during the 0 to 12 month period in a patient treated with XELJANZ 10 mg twice daily

The most common types of malignancy including malignancies observed during the long-term extension were lung and breast cancer followed by gastric colorectal renal cell prostate cancer lymphoma and malignant melanoma [see Warnings and Precautions (52)]

Laboratory Tests

Lymphocytes In the controlled clinical trials confirmed decreases in lymphocyte counts below 500 cellsmm3

occurred in 004 of patients for the 5 mg twice daily and 10 mg twice daily XELJANZ groups combined during the first 3 months of exposure

Confirmed lymphocyte counts less than 500 cellsmm3 were associated with an increased incidence of treated and serious infections [see Warnings and Precautions (54)]

Neutrophils In the controlled clinical trials confirmed decreases in ANC below 1000 cellsmm3 occurred in 007 of patients for the 5 mg twice daily and 10 mg twice daily XELJANZ groups combined during the first 3 months of exposure

There were no confirmed decreases in ANC below 500 cellsmm3 observed in any treatment group

There was no clear relationship between neutropenia and the occurrence of serious infections

In the long-term safety population the pattern and incidence of confirmed decreases in ANC remained consistent with what was seen in the controlled clinical trials [see Warnings and Precautions (54)]

Liver Enzyme Tests Confirmed increases in liver enzymes greater than 3 times the upper limit of normal (3x ULN) were observed in patients treated with XELJANZ In patients experiencing liver enzyme elevation modification of treatment regimen such as reduction in the dose of concomitant DMARD interruption of XELJANZ or reduction in XELJANZ dose resulted in decrease or normalization of liver enzymes

In the controlled monotherapy trials (0-3 months) no differences in the incidence of ALT or AST elevations were observed between the placebo and XELJANZ 5 mg and 10 mg twice daily groups

10

Reference ID 3213422

In the controlled background DMARD trials (0-3 months) ALT elevations greater than 3x ULN were observed in 10 13 and 12 of patients receiving placebo 5 mg and 10 mg twice daily respectively In these trials AST elevations greater than 3x ULN were observed in 06 05 and 04 of patients receiving placebo 5 mg and 10 mg twice daily respectively

One case of drug-induced liver injury was reported in a patient treated with XELJANZ 10 mg twice daily for approximately 25 months The patient developed symptomatic elevations of AST and ALT greater than 3x ULN and bilirubin elevations greater than 2x ULN which required hospitalizations and a liver biopsy

Lipids In the controlled clinical trials dose-related elevations in lipid parameters (total cholesterol LDL cholesterol HDL cholesterol triglycerides) were observed at one month of exposure and remained stable thereafter Changes in lipid parameters during the first 3 months of exposure in the controlled clinical trials are summarized below

bull Mean LDL cholesterol increased by 15 in the XELJANZ 5 mg twice daily arm and 19 in the XELJANZ 10 mg twice daily arm

bull Mean HDL cholesterol increased by 10 in the XELJANZ 5 mg twice daily arm and 12 in the XELJANZ 10 mg twice daily arm

bull Mean LDLHDL ratios were essentially unchanged in XELJANZ-treated patients

In a controlled clinical trial elevations in LDL cholesterol and ApoB decreased to pretreatment levels in response to statin therapy

In the long-term safety population elevations in lipid parameters remained consistent with what was seen in the controlled clinical trials

11

Reference ID 3213422

Serum Creatinine In the controlled clinical trials dose-related elevations in serum creatinine were observed with XELJANZ treatment The mean increase in serum creatinine was lt01 mgdL in the 12-month pooled safety analysis however with increasing duration of exposure in the long-term extensions up to 2 of patients were discontinued from XELJANZ treatment due to the protocol-specified discontinuation criterion of an increase in creatinine by more than 50 of baseline The clinical significance of the observed serum creatinine elevations is unknown

Other Adverse Reactions Adverse reactions occurring in 2 or more of patients on 5 mg twice daily or 10 mg twice daily XELJANZ and at least 1 greater than that observed in patients on placebo with or without DMARD are summarized in Table 4

Table 4 Adverse Reactions Occurring in at Least 2 or More of Patients on 5 or 10 mg Twice Daily XELJANZ With or Without DMARD (0-3 months) and at Least 1 Greater Than That Observed in Patients on Placebo

XELJANZ 5 mg Twice Daily

XELJANZ 10 mg Twice Daily

Placebo

Preferred Term N = 1336

() N = 1349

() N = 809

()

Diarrhea 40 29 23

Nasopharyngitis 38 28 28

Upper respiratory tract infection 45 38 33

Headache 43 34 21

Hypertension 16 23 11

N reflects randomized and treated patients from the seven clinical trials

Other adverse reactions occurring in controlled and open-label extension studies included

Blood and lymphatic system disorders Anemia Metabolism and nutrition disorders Dehydration Psychiatric disorders Insomnia Nervous system disorders Paresthesia Respiratory thoracic and mediastinal disorders Dyspnea cough sinus congestion Gastrointestinal disorders Abdominal pain dyspepsia vomiting gastritis nausea Hepatobiliary disorders Hepatic steatosis Skin and subcutaneous tissue disorders Rash erythema pruritus Musculoskeletal connective tissue and bone disorders Musculoskeletal pain arthralgia tendonitis joint swelling General disorders and administration site conditions Pyrexia fatigue peripheral edema

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Reference ID 3213422

7 DRUG INTERACTIONS

71 Potent CYP3A4 Inhibitors Tofacitinib exposure is increased when XELJANZ is coadministered with potent inhibitors of cytochrome P450 (CYP) 3A4 (eg ketoconazole) [see Dosage and Administration (21) and Figure 3]

72 Moderate CYP3A4 and Potent CYP2C19 Inhibitors Tofacitinib exposure is increased when XELJANZ is coadministered with medications that result in both moderate inhibition of CYP3A4 and potent inhibition of CYP2C19 (eg fluconazole) [see Dosage and Administration (21) and Figure 3]

73 Potent CYP3A4 Inducers Tofacitinib exposure is decreased when XELJANZ is coadministered with potent CYP3A4 inducers (eg rifampin) [see Dosage and Administration (21) and Figure 3]

74 Immunosuppressive Drugs There is a risk of added immunosuppression when XELJANZ is coadministered with potent immunosuppressive drugs (eg azathioprine tacrolimus cyclosporine) Combined use of multiple-dose XELJANZ with potent immunosuppressives has not been studied in rheumatoid arthritis

8 USE IN SPECIFIC POPULATIONS

81 Pregnancy Teratogenic effects Pregnancy Category C There are no adequate and well-controlled studies in pregnant women XELJANZ should be used during pregnancy only if the potential benefit justifies the potential risk to the fetus Tofacitinib has been shown to be fetocidal and teratogenic in rats and rabbits when given at exposures 146 times and 13 times respectively the maximum recommended human dose (MRHD)

In a rat embryofetal developmental study tofacitinib was teratogenic at exposure levels approximately 146 times the MRHD (on an AUC basis at oral doses of 100 mgkgday) Teratogenic effects consisted of external and soft tissue malformations of anasarca and membranous ventricular septal defects respectively and skeletal malformations or variations (absent cervical arch bent femur fibula humerus radius scapula tibia and ulna sternoschisis absent rib misshapen femur branched rib fused rib fused sternebra and hemicentric thoracic centrum) In addition there was an increase in post-implantation loss consisting of early and late resorptions resulting in a reduced number of viable fetuses Mean fetal body weight was reduced No developmental toxicity was observed in rats at exposure levels approximately 58 times the MRHD (on an AUC basis at oral doses of 30 mgkgday) In the rabbit embryofetal developmental study tofacitinib was teratogenic at exposure levels approximately 13 times the MRHD (on an AUC basis at oral doses of 30 mgkgday) in the absence of signs of maternal toxicity Teratogenic effects included thoracogastroschisis omphalocele membranous ventricular septal defects and cranialskeletal malformations (microstomia microphthalmia)

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Reference ID 3213422

mid-line and tail defects In addition there was an increase in post-implantation loss associated with late resorptions No developmental toxicity was observed in rabbits at exposure levels approximately 3 times the MRHD (on an AUC basis at oral doses of 10 mgkgday)

Nonteratogenic effects In a peri- and postnatal rat study there were reductions in live litter size postnatal survival and pup body weights at exposure levels approximately 73 times the MRHD (on an AUC basis at oral doses of 50 mgkgday) There was no effect on behavioral and learning assessments sexual maturation or the ability of the F1 generation rats to mate and produce viable F2 generation fetuses in rats at exposure levels approximately 17 times the MRHD (on an AUC basis at oral doses of 10 mgkgday)

Pregnancy Registry To monitor the outcomes of pregnant women exposed to XELJANZ a pregnancy registry has been established Physicians are encouraged to register patients and pregnant women are encouraged to register themselves by calling 1-877-311-8972

83 Nursing Mothers Tofacitinib was secreted in milk of lactating rats It is not known whether tofacitinib is excreted in human milk Because many drugs are excreted in human milk and because of the potential for serious adverse reactions in nursing infants from tofacitinib a decision should be made whether to discontinue nursing or to discontinue the drug taking into account the importance of the drug for the mother

84 Pediatric Use The safety and effectiveness of XELJANZ in pediatric patients have not been established

85 Geriatric Use Of the 3315 patients who enrolled in Studies I to V a total of 505 rheumatoid arthritis patients were 65 years of age and older including 71 patients 75 years and older The frequency of serious infection among XELJANZ-treated subjects 65 years of age and older was higher than among those under the age of 65 As there is a higher incidence of infections in the elderly population in general caution should be used when treating the elderly

86 Hepatic Impairment No dose adjustment is required in patients with mild hepatic impairment XELJANZ dose should be reduced to 5 mg once daily in patients with moderate hepatic impairment The safety and efficacy of XELJANZ have not been studied in patients with severe hepatic impairment or in patients with positive hepatitis B virus or hepatitis C virus serology [see Dosage and Administration (21) and Warnings and Precautions (56)]

87 Renal Impairment No dose adjustment is required in patients with mild renal impairment XELJANZ dose should be reduced to 5 mg once daily in patients with moderate and severe renal impairment [see Dosage and Administration (21)] In clinical trials XELJANZ was not evaluated in rheumatoid arthritis patients with baseline creatinine clearance values (estimated by the Cockroft-Gault equation) less than 40 mLmin

14

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10 OVERDOSAGE Signs Symptoms and Laboratory Findings of Acute Overdosage in Humans There is no experience with overdose of XELJANZ

Treatment or Management of Overdose Pharmacokinetic data up to and including a single dose of 100 mg in healthy volunteers indicate that more than 95 of the administered dose is expected to be eliminated within 24 hours

There is no specific antidote for overdose with XELJANZ In case of an overdose it is recommended that the patient be monitored for signs and symptoms of adverse reactions Patients who develop adverse reactions should receive appropriate treatment

11 DESCRIPTION XELJANZ is the citrate salt of tofacitinib a JAK inhibitor

Tofacitinib citrate is a white to off-white powder with the following chemical name (3R4R)-4shymethyl-3-(methyl-7H-pyrrolo [23-d]pyrimidin-4-ylamino)-szlig-oxo-1-piperidinepropanenitrile 2shyhydroxy-123-propanetricarboxylate (11) It is freely soluble in water

Tofacitinib citrate has a molecular weight of 5045 Daltons (or 3124 Daltons as the tofacitinib free base) and a molecular formula of C16H20N6ObullC6H8O7 The chemical structure of tofacitinib citrate is

NN

Me

Me

N

N N H

O N

HO2C CO2H

HO2C

OH bull

XELJANZ is supplied for oral administration as 5 mg tofacitinib (equivalent to 8 mg tofacitinib citrate) white round immediate-release film-coated tablet Each tablet of XELJANZ contains the appropriate amount of XELJANZ as a citrate salt and the following inactive ingredients microcrystalline cellulose lactose monohydrate croscarmellose sodium magnesium stearate HPMC 2910Hypromellose 6cP titanium dioxide macrogolPEG3350 and triacetin

12 CLINICAL PHARMACOLOGY

121 Mechanism of Action Tofacitinib is a Janus kinase (JAK) inhibitor JAKs are intracellular enzymes which transmit signals arising from cytokine or growth factor-receptor interactions on the cellular membrane to influence cellular processes of hematopoiesis and immune cell function Within the signaling pathway JAKs phosphorylate and activate Signal Transducers and Activators of Transcription (STATs) which modulate intracellular activity including gene expression Tofacitinib modulates

15

Reference ID 3213422

the signaling pathway at the point of JAKs preventing the phosphorylation and activation of STATs JAK enzymes transmit cytokine signaling through pairing of JAKs (eg JAK1JAK3 JAK1JAK2 JAK1TyK2 JAK2JAK2) Tofacitinib inhibited the in vitro activities of JAK1JAK2 JAK1JAK3 and JAK2JAK2 combinations with IC50 of 406 56 and 1377 nM respectively However the relevance of specific JAK combinations to therapeutic effectiveness is not known

122 Pharmacodynamics Treatment with XELJANZ was associated with dose-dependent reductions of circulating CD1656+ natural killer cells with estimated maximum reductions occurring at approximately 8shy10 weeks after initiation of therapy These changes generally resolved within 2-6 weeks after discontinuation of treatment Treatment with XELJANZ was associated with dose-dependent increases in B cell counts Changes in circulating T-lymphocyte counts and T-lymphocyte subsets (CD3+ CD4+ and CD8+) were small and inconsistent The clinical significance of these changes is unknown

Total serum IgG IgM and IgA levels after 6-month dosing in patients with rheumatoid arthritis were lower than placebo however changes were small and not dose-dependent

After treatment with XELJANZ in patients with rheumatoid arthritis rapid decreases in serum C-reactive protein (CRP) were observed and maintained throughout dosing Changes in CRP observed with XELJANZ treatment do not reverse fully within 2 weeks after discontinuation indicating a longer duration of pharmacodynamic activity compared to the pharmacokinetic half-life

123 Pharmacokinetics Following oral administration of XELJANZ peak plasma concentrations are reached within 05shy1 hour elimination half-life is ~3 hours and a dose-proportional increase in systemic exposure was observed in the therapeutic dose range Steady state concentrations are achieved in 24-48 hours with negligible accumulation after twice daily administration

Absorption The absolute oral bioavailability of tofacitinib is 74 Coadministration of XELJANZ with a high-fat meal resulted in no changes in AUC while Cmax was reduced by 32 In clinical trials XELJANZ was administered without regard to meals

Distribution After intravenous administration the volume of distribution is 87 L The protein binding of tofacitinib is ~40 Tofacitinib binds predominantly to albumin and does not appear to bind to 1-acid glycoprotein Tofacitinib distributes equally between red blood cells and plasma

Metabolism and Elimination Clearance mechanisms for tofacitinib are approximately 70 hepatic metabolism and 30 renal excretion of the parent drug The metabolism of tofacitinib is primarily mediated by CYP3A4 with minor contribution from CYP2C19 In a human radiolabeled study more than 65 of the total circulating radioactivity was accounted for by unchanged tofacitinib with the remaining

16

Reference ID 3213422

35 attributed to 8 metabolites each accounting for less than 8 of total radioactivity The pharmacologic activity of tofacitinib is attributed to the parent molecule

Pharmacokinetics in Rheumatoid Arthritis Patients Population PK analysis in rheumatoid arthritis patients indicated no clinically relevant change in tofacitinib exposure after accounting for differences in renal function (ie creatinine clearance) between patients based on age weight gender and race (Figure 1) An approximately linear relationship between body weight and volume of distribution was observed resulting in higher peak (Cmax) and lower trough (Cmin) concentrations in lighter patients However this difference is not considered to be clinically relevant The between-subject variability ( coefficient of variation) in AUC of tofacitinib is estimated to be approximately 27

Specific Populations The effect of renal and hepatic impairment and other intrinsic factors on the pharmacokinetics of tofacitinib is shown in Figure 1

17

Reference ID 3213422

Figure 1 Impact of Intrinsic Factors on Tofacitinib Pharmacokinetics

Intrinsic Factor

Weight = 40 kg

Weight = 140 kg

Age = 80 years

Female

Asian

Black

Hispanic

Renal Impairment (Mild)

Renal Impairment (Moderate)

Renal Impairment (Severe)

Hepatic Impairment (Mild)

Hepatic Impairment (Moderate)

PK

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

0

Ratio and 90 CI Recommendation

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

Reduce Dose to 5 mg Once Daily

Reduce Dose to 5 mg Once Daily

No Dose Adjustment

Reduce Dose to 5 mg Once Daily

05 1 15 2 25 3 35 4

Ratio relative to reference

Supplemental doses are not necessary in patients after dialysis

Reference values for weight age gender and race comparisons are 70 kg 55 years male and White respectively Reference groups for renal and hepatic impairment data are subjects with normal renal and hepatic function

Drug Interactions

Potential for XELJANZ to Influence the PK of Other Drugs In vitro studies indicate that tofacitinib does not significantly inhibit or induce the activity of the

18

Reference ID 3213422

major human drug-metabolizing CYPs (CYP1A2 CYP2B6 CYP2C8 CYP2C9 CYP2C19 CYP2D6 and CYP3A4) at concentrations exceeding 185 times the steady state Cmax of a 5 mg twice daily dose These in vitro results were confirmed by a human drug interaction study showing no changes in the PK of midazolam a highly sensitive CYP3A4 substrate when coadministered with XELJANZ

In rheumatoid arthritis patients the oral clearance of tofacitinib does not vary with time indicating that tofacitinib does not normalize CYP enzyme activity in rheumatoid arthritis patients Therefore coadministration with XELJANZ is not expected to result in clinically relevant increases in the metabolism of CYP substrates in rheumatoid arthritis patients

In vitro data indicate that the potential for tofacitinib to inhibit transporters such as Pshyglycoprotein organic anionic or cationic transporters at therapeutic concentrations is low

Dosing recommendations for coadministered drugs following administration with XELJANZ are shown in Figure 2

Figure 2 Impact of XELJANZ on PK of Other Drugs

Coadministered PK Drug

Methotrexate AUC

Cmax

CYP3A Substrate AUC Midazolam

Cmax

Oral ContraceptivesLevonorgestrel

AUC

Cmax

Ethinyl Estradiol AUC

Cmax

OCT amp MATE Substrate AUC Metformin

Cmax

Ratio and 90 CI Recommendation

No Dose Adjustment

No dose adjustment for CYP3A substrates such as midazolam

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

0 025 05 075 1 125 15 175 2

Ratio relative to reference

Note Reference group is administration of concomitant medication alone OCT = Organic Cationic Transporter MATE = Multidrug and Toxic Compound Extrusion

Potential for Other Drugs to Influence the PK of Tofacitinib Since tofacitinib is metabolized by CYP3A4 interaction with drugs that inhibit or induce CYP3A4 is likely Inhibitors of CYP2C19 alone or P-glycoprotein are unlikely to substantially alter the PK of tofacitinib Dosing recommendations for XELJANZ for administration with CYP inhibitors or inducers are shown in Figure 3

19

Reference ID 3213422

Figure 3 Impact of Other Drugs on PK of XELJANZ

Coadministered PK Drug

CYP3A Inhib itor AUC Ketoconazole

Cmax

CYP3A amp CYP2C19 Inhib itor AUC

Cmax Fluconazole

CYP Inducer Rifampin AUC

Cmax

Methotrexate AUC

Cmax

Tacrolimus AUC Cmax

Cyclosporine AUC

Cmax

Ratio and 90 CI Recommendation

Reduce XELJANZ Dose to 5 mg Once Daily

Reduce XELJANZ Dose to 5 mg Once Daily

May Decrease Efficacy

No Dose Adjustment

There is a risk of added immunosuppressionif XELJANZ is taken with Tacrolimus

There is a risk of added immunosuppressionif XELJANZ is taken with Cyclosporine

0 05 1 15 2 25

Ratio relative to reference

Note Reference group is administration of tofacitinib alone

13 NONCLINICAL TOXICOLOGY

131 Carcinogenesis Mutagenesis Impairment of Fertility In a 39-week toxicology study in monkeys tofacitinib at exposure levels approximately 6 times the MRHD (on an AUC basis at oral doses of 5 mgkg twice daily) produced lymphomas No lymphomas were observed in this study at exposure levels 1 times the MRHD (on an AUC basis at oral doses of 1 mgkg twice daily)

The carcinogenic potential of tofacitinib was assessed in 6-month rasH2 transgenic mouse carcinogenicity and 2-year rat carcinogenicity studies Tofacitinib at exposure levels approximately 34 times the MRHD (on an AUC basis at oral doses of 200 mgkgday) was not carcinogenic in mice

In the 24-month oral carcinogenicity study in Sprague-Dawley rats tofacitinib caused benign Leydig cell tumors hibernomas (malignancy of brown adipose tissue) and benign thymomas at doses greater than or equal to 30 mgkgday (approximately 42 times the exposure levels at the MRHD on an AUC basis) The relevance of benign Leydig cell tumors to human risk is not known

20

Reference ID 3213422

Tofacitinib was not mutagenic in the bacterial reverse mutation assay It was positive for clastogenicity in the in vitro chromosome aberration assay with human lymphocytes in the presence of metabolic enzymes but negative in the absence of metabolic enzymes Tofacitinib was negative in the in vivo rat micronucleus assay and in the in vitro CHO-HGPRT assay and the in vivo rat hepatocyte unscheduled DNA synthesis assay

In rats tofacitinib at exposure levels approximately 17 times the MRHD (on an AUC basis at oral doses of 10 mgkgday) reduced female fertility due to increased post-implantation loss There was no impairment of female rat fertility at exposure levels of tofacitinib equal to the MRHD (on an AUC basis at oral doses of 1 mgkgday) Tofacitinib exposure levels at approximately 133 times the MRHD (on an AUC basis at oral doses of 100 mgkgday) had no effect on male fertility sperm motility or sperm concentration

14 CLINICAL STUDIES The XELJANZ clinical development program included two dose-ranging trials and five confirmatory trials

DOSE-RANGING TRIALS Dose selection for XELJANZ was based on two pivotal dose-ranging trials

Dose-Ranging Study 1 was a 6-month monotherapy trial in 384 patients with active rheumatoid arthritis who had an inadequate response to a DMARD Patients who previously received adalimumab therapy were excluded Patients were randomized to 1 of 7 monotherapy treatments XELJANZ 1 3 5 10 or 15 mg twice daily adalimumab 40 mg subcutaneously every other week for 10 weeks followed by XELJANZ 5 mg twice daily for 3 months or placebo

Dose-Ranging Study 2 was a 6-month trial in which 507 patients with active rheumatoid arthritis who had an inadequate response to MTX alone received one of 6 dose regimens of XELJANZ (20 mg once daily 1 3 5 10 or 15 mg twice daily) or placebo added to background MTX

The results of XELJANZ-treated patients achieving ACR20 responses in Studies 1 and 2 are shown in Figure 4 Although a dose-response relationship was observed in Study 1 the proportion of patients with an ACR20 response did not clearly differ between the 10 mg and 15 mg doses Furthermore there was a smaller proportion of patients who responded to adalimumab monotherapy compared to those treated with XELJANZ doses 3 mg twice daily and greater In Study 2 a smaller proportion of patients achieved an ACR20 response in the placebo and XELJANZ 1 mg groups compared to patients treated with the other XELJANZ doses However there was no difference in the proportion of responders among patients treated with XELJANZ 3 5 10 15 mg twice daily or 20 mg once daily doses

21

Reference ID 3213422

Figure 4 Proportion of Patients with ACR20 Response at Month 3 in Dose-Ranging Studies 1 and 2

CONFIRMATORY TRIALS Study I was a 6-month monotherapy trial in which 610 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to a DMARD (nonbiologic or biologic) received XELJANZ 5 or 10 mg twice daily or placebo At the Month 3 visit all patients randomized to placebo treatment were advanced in a blinded fashion to a second predetermined treatment of XELJANZ 5 or 10 mg twice daily The primary endpoints at Month 3 were the proportion of patients who achieved an ACR20 response changes in Health Assessment Questionnaire ndash Disability Index (HAQ-DI) and rates of Disease Activity Score DAS28-4(ESR) less than 26

Study II was a 12-month trial in which 792 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to a nonbiologic DMARD received XELJANZ 5 or 10 mg twice daily or placebo added to background DMARD treatment (excluding potent immunosuppressive treatments such as azathioprine or cyclosporine) At the Month 3 visit nonresponding patients were advanced in a blinded fashion to a second predetermined treatment of XELJANZ 5 or 10 mg twice daily At the end of Month 6 all placebo patients were advanced to their second predetermined treatment in a blinded fashion The primary endpoints were the proportion of patients who achieved an ACR20 response at Month 6 changes in HAQ-DI at Month 3 and rates of DAS28-4(ESR) less than 26 at Month 6

Study III was a 12-month trial in 717 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to MTX Patients received XELJANZ 5 or 10 mg twice daily adalimumab 40 mg subcutaneously every other week or placebo added to background MTX

22

Reference ID 3213422

Placebo patients were advanced as in Study II The primary endpoints were the proportion of patients who achieved an ACR20 response at Month 6 HAQ-DI at Month 3 and DAS28-4(ESR) less than 26 at Month 6

Study IV is an ongoing 2-year trial with a planned analysis at 1 year in which 797 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to MTX received XELJANZ 5 or 10 mg twice daily or placebo added to background MTX Placebo patients were advanced as in Study II The primary endpoints were the proportion of patients who achieved an ACR20 response at Month 6 mean change from baseline in van der Heijde-modified total Sharp Score (mTSS) at Month 6 HAQ-DI at Month 3 and DAS28-4(ESR) less than 26 at Month 6

Study V was a 6-month trial in which 399 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to at least one approved TNF-inhibiting biologic agent received XELJANZ 5 or 10 mg twice daily or placebo added to background MTX At the Month 3 visit all patients randomized to placebo treatment were advanced in a blinded fashion to a second predetermined treatment of XELJANZ 5 or 10 mg twice daily The primary endpoints at Month 3 were the proportion of patients who achieved an ACR20 response HAQ-DI and DAS28-4(ESR) less than 26

Clinical Response The percentages of XELJANZ-treated patients achieving ACR20 ACR50 and ACR70 responses in Studies I IV and V are shown in Table 5 Similar results were observed with Studies II and III In all trials patients treated with either 5 or 10 mg twice daily XELJANZ had higher ACR20 ACR50 and ACR70 response rates versus placebo with or without background DMARD treatment at Month 3 and Month 6 Higher ACR20 response rates were observed within 2 weeks compared to placebo In the 12-month trials ACR response rates in XELJANZ-treated patients were consistent at 6 and 12 months

23

Reference ID 3213422

Table 5 Proportion of Patients with an ACR Response Percent of Patients

Monotherapy in Nonbiologic or Biologic DMARD Inadequate

Respondersc

MTX Inadequate Respondersd TNF Inhibitor Inadequate Responderse

Study I Study IV Study V

Na PBO

122

XELJANZ 5 mg Twice

Daily

243

XELJANZ 10 mg Twice Daily

245

PBO + MTX

160

XELJANZ 5 mg Twice

Daily + MTX

321

XELJANZ 10 mg Twice

Daily + MTX

316

PBO +

MTX

132

XELJANZ 5 mg Twice

Daily + MTX

133

XELJANZ 10 mg Twice

Daily + MTX

134 ACR20 Month 3 Month 6

26 NAb

59 69

65 70

27 25

55 50

67 62

24 NA

41 51

48 54

ACR50 Month 3 Month 6

12 NA

31 42

36 46

8 9

29 32

37 44

8 NA

26 37

28 30

ACR70 Month 3 Month 6

6 NA

15 22

20 29

3 1

11 14

17 23

2 NA

14 16

10 16

a N is number of randomized and treated patients b NA Not applicable as data for placebo treatment is not available beyond 3 months in Studies I and V due to placebo advancement c Inadequate response to at least one DMARD (biologic or nonbiologic) due to lack of efficacy or toxicity d Inadequate response to MTX defined as the presence of sufficient residual disease activity to meet the entry criteria e Inadequate response to a least one TNF inhibitor due to lack of efficacy andor intolerance

In Study IV a greater proportion of patients treated with XELJANZ 5 mg or 10 mg twice daily plus MTX achieved a low level of disease activity as measured by a DAS28-4(ESR) less than 26 at 6 months compared to those treated with MTX alone (Table 6)

24

Reference ID 3213422

Table 6 Proportion of Patients with DAS28-4(ESR) Less Than 26 with Number of Residual Active Joints Study IV DAS28-4(ESR) Less Than 26 Placebo + MTX

160

XELJANZ 5 mg Twice Daily + MTX

321

XELJANZ 10 mg Twice Daily + MTX

316 Proportion of responders at Month 6 (n) 1 (2) 6 (19) 13 (42)

Of responders proportion with 0 active joints (n)

50 (1) 42 (8) 36 (15)

Of responders proportion with 1 active joint (n) 0 5 (1) 17 (7) Of responders proportion with 2 active joints (n)

0 32 (6) 7 (3)

Of responders proportion with 3 or more active joints (n)

50 (1) 21 (4) 40 (17)

The results of the components of the ACR response criteria for Study IV are shown in Table 7 Similar results were observed in Studies I II III and V

Table 7 Components of ACR Response at 3 Months Study IV

XELJANZ

5 mg

Twice Daily + MTX

N=321

XELJANZ

10 mg

Twice Daily + MTX

N=316

Placebo + MTX

N=160

Component (mean) a Baseline Month 3a Baseline Month 3a Baseline Month 3a

Number of tender

joints 24 13 23 10 23 18

(0-68) (14) (14) (15) (12) (13) (14)

Number of swollen

joints 14 6 14 6 14 10

(0-66) (8) (8) (8) (7) (9) (9)

Painb 58

(23)

34

(23)

58

(24)

29

(22)

55

(24)

47

(24)

Patient global

assessmentb

58

(24)

35

(23)

57

(23)

29

(20)

54

(23)

47

(24)

Disability index

(HAQ-DI)c 141 099 140 084 132 119

(068) (065) (066) (064) (067) (068)

25

Reference ID 3213422

Physician global

assessmentb 59 30 58 24 56 43

(16) (19) (17) (17) (18) (22)

CRP (mgL) 153 71 171 44 137 146

(190) (191) (269) (86) (149) (187) aData shown is mean (Standard Deviation) at Month 3bVisual analog scale 0 = best 100 = worst cHealth Assessment Questionnaire Disability Index 0 = best 3 = worst 20 questions categories dressing and grooming arising eating walking hygiene reach grip and activities

The percent of ACR20 responders by visit for Study IV is shown in Figure 5 Similar responses were observed in Studies I II III and V

Figure 5 Percentage of ACR20 Responders by Visit for Study IV

Physical Function Response Improvement in physical functioning was measured by the HAQ-DI Patients receiving XELJANZ 5 and 10 mg twice daily demonstrated greater improvement from baseline in physical functioning compared to placebo at Month 3

The mean (95 CI) difference from placebo in HAQ-DI improvement from baseline at Month 3 in Study III was -022 (-035 -010) in patients receiving 5 mg XELJANZ twice daily and -032 (-044 -019) in patients receiving 10 mg XELJANZ twice daily Similar results were obtained in

26

Reference ID 3213422

Studies I II IV and V In the 12-month trials HAQ-DI results in XELJANZ-treated patients were consistent at 6 and 12 months

16 HOW SUPPLIEDSTORAGE AND HANDLING XELJANZ is provided as 5 mg tofacitinib (equivalent to 8 mg tofacitinib citrate) tablets White round immediate-release film-coated tablets debossed with ldquoPfizerrdquo on one side and ldquoJKI 5rdquo on the other side and available in

Bottles of 60 NDC 0069-1001-01 Bottles of 180 NDC 0069-1001-02

Storage and Handling Store at 20degC to 25degC (68degF to 77degF) [See USP Controlled Room Temperature]

Do not repackage

17 PATIENT COUNSELING INFORMATION See FDA-approved patient labeling (Medication Guide)

Inform patients of the availability of a Medication Guide and instruct them to read the Medication Guide prior to taking XELJANZ Instruct patients to take XELJANZ only as prescribed

This productrsquos label may have been updated For current full prescribing information please visit wwwpfizercom

LAB-0445-10

27

Reference ID 3213422

MEDICATION GUIDE

XELJANZ (ZELrsquo JANSrsquo) (tofacitinib)

Read this Medication Guide before you start taking XELJANZ and each time you get a refill There may be new information This Medication Guide does not take the place of talking to your healthcare provider about your medical condition or treatment

What is the most important information I should know about XELJANZ XELJANZ may cause serious side effects including

1 Serious infections

XELJANZ is a medicine that affects your immune system XELJANZ can lower the ability of your immune system to fight infections Some people have serious infections while taking XELJANZ including tuberculosis (TB) and infections caused by bacteria fungi or viruses that can spread throughout the body Some people have died from these infections Your healthcare provider should test you for TB before starting XELJANZ Your healthcare provider should monitor you closely for signs and symptoms of

TB infection during treatment with XELJANZ

You should not start taking XELJANZ if you have any kind of infection unless your healthcare provider tells you it is okay

Before starting XELJANZ tell your healthcare provider if you think you have an infection or have symptoms of an infection such as

o fever sweating or chills o warm red or painful skin o muscle aches or sores on your body o cough o diarrhea or stomach pain o shortness of breath o burning when you urinate o blood in phlegm or urinating more often o weight loss than normal

o feeling very tired are being treated for an infection get a lot of infections or have infections that keep coming back have diabetes HIV or a weak immune system People with these conditions

have a higher chance for infections have TB or have been in close contact with someone with TB live or have lived or have traveled to certain parts of the country (such as the

Ohio and Mississippi River valleys and the Southwest) where there is an increased chance for getting certain kinds of fungal infections (histoplasmosis coccidioidomycosis or blastomycosis) These infections may happen or become more severe if you use XELJANZ Ask your healthcare provider if you do not know if you have lived in an area where these infections are common

have or have had hepatitis B or C

28

Reference ID 3213422

After starting XELJANZ call your healthcare provider right away if you have any symptoms of an infection XELJANZ can make you more likely to get infections or make worse any infection that you have

2 Cancer and immune system problems

XELJANZ may increase your risk of certain cancers by changing the way your immune system works

Lymphoma and other cancers can happen in patients taking XELJANZ Tell your healthcare provider if you have ever had any type of cancer

Some people who have taken XELJANZ with certain other medicines to prevent kidney transplant rejection have had a problem with certain white blood cells growing out of control (Epstein Barr Virus-associated post transplant lymphoproliferative disorder)

3 Tears (perforation) in the stomach or intestines

Tell your healthcare provider if you have had diverticulitis (inflammation in parts of the large intestine) or ulcers in your stomach or intestines Some people taking XELJANZ get tears in their stomach or intestine This happens most often in people who also take nonsteroidal anti-inflammatory drugs (NSAIDs) corticosteroids or methotrexate

Tell your healthcare provider right away if you have fever and stomach-area pain that does not go away and a change in your bowel habits

4 Changes in certain laboratory test results Your healthcare provider should do blood tests before you start receiving XELJANZ and while you take XELJANZ to check for the following side effects

changes in lymphocyte counts Lymphocytes are white blood cells that help the body fight off infections

low neutrophil counts Neutrophils are white blood cells that help the body fight off infections

low red blood cell count This may mean that you have anemia which may make you feel weak and tired

Your healthcare provider should routinely check certain liver tests

You should not receive XELJANZ if your lymphocyte count neutrophil count or red blood cell count is too low or your liver tests are too high

Your healthcare provider may stop your XELJANZ treatment for a period of time if needed because of changes in these blood test results

29

Reference ID 3213422

You may also have changes in other laboratory tests such as your blood cholesterol levels Your healthcare provider should do blood tests to check your cholesterol levels 4 to 8 weeks after you start receiving XELJANZ and as needed after that Normal cholesterol levels are important to good heart health

See ldquoWhat are the possible side effects of XELJANZrdquo for more information about side effects

What is XELJANZ

XELJANZ is a prescription medicine called a Janus kinase (JAK) inhibitor XELJANZ is used to treat adults with moderately to severely active rheumatoid arthritis in which methotrexate did not work well

It is not known if XELJANZ is safe and effective in people with Hepatitis B or C

XELJANZ is not for people with severe liver problems

It is not known if XELJANZ is safe and effective in children

What should I tell my healthcare provider before taking XELJANZ

XELJANZ may not be right for you Before taking XELJANZ tell your healthcare provider if you have an infection See ldquoWhat is the most important information I should know

about XELJANZrdquo have liver problems have kidney problems have any stomach area (abdominal) pain or been diagnosed with diverticulitis or

ulcers in your stomach or intestines have had a reaction to tofacitinib or any of the ingredients in XELJANZ have recently received or are scheduled to receive a vaccine People who take

XELJANZ should not receive live vaccines People taking XELJANZ can receive non-live vaccines

have any other medical conditions plan to become pregnant or are pregnant It is not known if XELJANZ will harm

an unborn baby

Pregnancy Registry Pfizer has a registry for pregnant women who take XELJANZ The purpose of this registry is to check the health of the pregnant mother and her baby If you are pregnant or become pregnant while taking XELJANZ talk to your healthcare provider about how you can join this pregnancy registry or you may contact the registry at 1-877-311-8972 to enroll

plan to breastfeed or are breastfeeding You and your healthcare provider should decide if you will take XELJANZ or breastfeed You should not do both

30

Reference ID 3213422

Tell your healthcare provider about all the medicines you take including prescription and non-prescription medicines vitamins and herbal supplements XELJANZ and other medicines may affect each other causing side effects

Especially tell your healthcare provider if you take any other medicines to treat your rheumatoid arthritis You should not take

tocilizumab (Actemrareg) etanercept (Enbrelreg) adalimumab (Humirareg) infliximab (Remicadereg) rituximab (Rituxanreg) abatacept (Orenciareg) anakinra (Kineretreg) certolizumab (Cimziareg) golimumab (Simponireg) azathioprine cyclosporine or other immunosuppressive drugs while you are taking XELJANZ Taking XELJANZ with these medicines may increase your risk of infection

medicines that affect the way certain liver enzymes work Ask your healthcare provider if you are not sure if your medicine is one of these

Know the medicines you take Keep a list of them to show your healthcare provider and pharmacist when you get a new medicine

How should I take XELJANZ

Take XELJANZ as your healthcare provider tells you to take it

Take XELJANZ 2 times a day with or without food

If you take too much XELJANZ call your healthcare provider or go the nearest hospital emergency room right away

What are possible side effects of XELJANZ

XELJANZ may cause serious side effects including

See ldquoWhat is the most important information I should know about XELJANZrdquo

Hepatitis B or C activation infection in people who carry the virus in their blood If you are a carrier of the hepatitis B or C virus (viruses that affect the liver) the virus may become active while you use XELJANZ Your healthcare provider may do blood tests before you start treatment with XELJANZ and while you are using XELJANZ Tell your healthcare provider if you have any of the following symptoms of a possible hepatitis B or C infection

o feel very tired o fevers o skin or eyes look yellow o chills o little or no appetite o stomach discomfort o vomiting o muscle aches o clay-colored bowel o dark urine

movements o skin rash

31

Reference ID 3213422

Common side effects of XELJANZ include upper respiratory tract infections (common cold sinus infections) headache diarrhea nasal congestion sore throat and runny nose (nasopharyngitis)

Tell your healthcare provider if you have any side effect that bothers you or that does not go away

These are not all the possible side effects of XELJANZ For more information ask your healthcare provider or pharmacist

Call your doctor for medical advice about side effects You may report side effects to FDA at 1-800-FDA-1088

You may also report side effects to Pfizer at 1-800-438-1985

How should I store XELJANZ

Store XELJANZ at 68degF to 77degF (room temperature)

Safely throw away medicine that is out of date or no longer needed

Keep XELJANZ and all medicines out of the reach of children

General information about the safe and effective use of XELJANZ

Medicines are sometimes prescribed for purposes other than those listed in a Medication Guide Do not use XELJANZ for a condition for which it was not prescribed Do not give XELJANZ to other people even if they have the same symptoms you have It may harm them

This Medication Guide summarizes the most important information about XELJANZ If you would like more information talk to your healthcare provider You can ask your pharmacist or healthcare provider for information about XELJANZ that is written for health professionals

What are the ingredients in XELJANZ

Active ingredient tofacitinib citrate

Inactive ingredients microcrystalline cellulose lactose monohydrate croscarmellose sodium magnesium stearate HPMC 2910Hypromellose 6cP titanium dioxide macrogolPEG3350 and triacetin

32

Reference ID 3213422

This Medication Guide has been approved by the US Food and Drug Administration

LAB-0535-10 Issued November 2012

33

Reference ID 3213422

XELJANZ should not be initiated in patients with an active infection including localized infections The risks and benefits of treatment should be considered prior to initiating XELJANZ in patients bull with chronic or recurrent infection bull who have been exposed to tuberculosis bull with a history of a serious or an opportunistic infection bull who have resided or traveled in areas of endemic tuberculosis or endemic mycoses or bull with underlying conditions that may predispose them to infection

Patients should be closely monitored for the development of signs and symptoms of infection during and after treatment with XELJANZ XELJANZ should be interrupted if a patient develops a serious infection an opportunistic infection or sepsis A patient who develops a new infection during treatment with XELJANZ should undergo prompt and complete diagnostic testing appropriate for an immunocompromised patient appropriate antimicrobial therapy should be initiated and the patient should be closely monitored

Tuberculosis Patients should be evaluated and tested for latent or active infection prior to administration of XELJANZ

Anti-tuberculosis therapy should also be considered prior to administration of XELJANZ in patients with a past history of latent or active tuberculosis in whom an adequate course of treatment cannot be confirmed and for patients with a negative test for latent tuberculosis but who have risk factors for tuberculosis infection Consultation with a physician with expertise in the treatment of tuberculosis is recommended to aid in the decision about whether initiating antishytuberculosis therapy is appropriate for an individual patient

Patients should be closely monitored for the development of signs and symptoms of tuberculosis including patients who tested negative for latent tuberculosis infection prior to initiating therapy

Patients with latent tuberculosis should be treated with standard antimycobacterial therapy before administering XELJANZ

Viral Reactivation Viral reactivation including cases of herpes virus reactivation (eg herpes zoster) were observed in clinical studies with XELJANZ The impact of XELJANZ on chronic viral hepatitis reactivation is unknown Patients who screened positive for hepatitis B or C were excluded from clinical trials

52 Malignancy and Lymphoproliferative Disorder Consider the risks and benefits of XELJANZ treatment prior to initiating therapy in patients with a known malignancy other than a successfully treated non-melanoma skin cancer (NMSC) or when considering continuing XELJANZ in patients who develop a malignancy Malignancies were observed in clinical studies of XELJANZ [see Adverse Reactions (61)]

5

Reference ID 3213422

In the seven controlled rheumatoid arthritis clinical studies 11 solid cancers and one lymphoma were diagnosed in 3328 patients receiving XELJANZ with or without DMARD compared to 0 solid cancers and 0 lymphomas in 809 patients in the placebo with or without DMARD group during the first 12 months of exposure Lymphomas and solid cancers have also been observed in the long-term extension studies in rheumatoid arthritis patients treated with XELJANZ

In Phase 2B controlled dose-ranging trials in de-novo renal transplant patients all of whom received induction therapy with basiliximab high dose corticosteroids and mycophenolic acid products Epstein Barr Virus-associated post-transplant lymphoproliferative disorder was observed in 5 out of 218 patients treated with XELJANZ (23) compared to 0 out of 111 patients treated with cyclosporine

53 Gastrointestinal Perforations Events of gastrointestinal perforation have been reported in clinical studies with XELJANZ in rheumatoid arthritis patients although the role of JAK inhibition in these events is not known

XELJANZ should be used with caution in patients who may be at increased risk for gastrointestinal perforation (eg patients with a history of diverticulitis) Patients presenting with new onset abdominal symptoms should be evaluated promptly for early identification of gastrointestinal perforation [see Adverse Reactions (61)]

54 Laboratory Parameters

Lymphocytes Treatment with XELJANZ was associated with initial lymphocytosis at one month of exposure followed by a gradual decrease in mean lymphocyte counts below the baseline of approximately 10 during 12 months of therapy Lymphocyte counts less than 500 cellsmm3 were associated with an increased incidence of treated and serious infections

Avoid initiation of XELJANZ treatment in patients with a low lymphocyte count (ie less than 500 cellsmm3) In patients who develop a confirmed absolute lymphocyte count less than 500 cellsmm3 treatment with XELJANZ is not recommended

Monitor lymphocyte counts at baseline and every 3 months thereafter For recommended modifications based on lymphocyte counts see Dosage and Administration (23)

Neutrophils Treatment with XELJANZ was associated with an increased incidence of neutropenia (less than 2000 cellsmm3) compared to placebo

Avoid initiation of XELJANZ treatment in patients with a low neutrophil count (ie ANC less than 1000 cellsmm3) For patients who develop a persistent ANC of 500-1000 cellsmm3 interrupt XELJANZ dosing until ANC is greater than or equal to 1000 cellsmm3 In patients who develop an ANC less than 500 cellsmm3 treatment with XELJANZ is not recommended

6

Reference ID 3213422

Monitor neutrophil counts at baseline and after 4-8 weeks of treatment and every 3 months thereafter For recommended modifications based on ANC results see Dosage and Administration (23)

Hemoglobin Avoid initiation of XELJANZ treatment in patients with a low hemoglobin level (ie less than 9 gdL) Treatment with XELJANZ should be interrupted in patients who develop hemoglobin levels less than 8 gdL or whose hemoglobin level drops greater than 2 gdL on treatment

Monitor hemoglobin at baseline and after 4-8 weeks of treatment and every 3 months thereafter For recommended modifications based on hemoglobin results see Dosage and Administration (23)

Liver Enzymes Treatment with XELJANZ was associated with an increased incidence of liver enzyme elevation compared to placebo Most of these abnormalities occurred in studies with background DMARD (primarily methotrexate) therapy

Routine monitoring of liver tests and prompt investigation of the causes of liver enzyme elevations is recommended to identify potential cases of drug-induced liver injury If drug-induced liver injury is suspected the administration of XELJANZ should be interrupted until this diagnosis has been excluded

Lipids Treatment with XELJANZ was associated with increases in lipid parameters including total cholesterol low-density lipoprotein (LDL) cholesterol and high-density lipoprotein (HDL) cholesterol Maximum effects were generally observed within 6 weeks The effect of these lipid parameter elevations on cardiovascular morbidity and mortality has not been determined

Assessment of lipid parameters should be performed approximately 4-8 weeks following initiation of XELJANZ therapy

Manage patients according to clinical guidelines [eg National Cholesterol Educational Program (NCEP)] for the management of hyperlipidemia

55 Vaccinations No data are available on the response to vaccination or on the secondary transmission of infection by live vaccines to patients receiving XELJANZ Live vaccines should not be given concurrently with XELJANZ

Update immunizations in agreement with current immunization guidelines prior to initiating XELJANZ therapy

7

Reference ID 3213422

56 Hepatic Impairment Treatment with XELJANZ is not recommended in patients with severe hepatic impairment [see Adverse Reactions (61) and Use in Specific Populations (86)]

6 ADVERSE REACTIONS Because clinical studies are conducted under widely varying conditions adverse reaction rates observed in the clinical studies of a drug cannot be directly compared to rates in the clinical studies of another drug and may not predict the rates observed in a broader patient population in clinical practice

The following data includes two Phase 2 and five Phase 3 double-blind controlled multicenter trials In these trials patients were randomized to doses of XELJANZ 5 mg twice daily (292 patients) and 10 mg twice daily (306 patients) monotherapy XELJANZ 5 mg twice daily (1044 patients) and 10 mg twice daily (1043 patients) in combination with DMARDs (including methotrexate) and placebo (809 patients) All seven protocols included provisions for patients taking placebo to receive treatment with XELJANZ at Month 3 or Month 6 either by patient response (based on uncontrolled disease activity) or by design so that adverse events cannot always be unambiguously attributed to a given treatment Therefore some analyses that follow include patients who changed treatment by design or by patient response from placebo to XELJANZ in both the placebo and XELJANZ group of a given interval Comparisons between placebo and XELJANZ were based on the first 3 months of exposure and comparisons between XELJANZ 5 mg twice daily and XELJANZ 10 mg twice daily were based on the first 12 months of exposure

The long-term safety population includes all patients who participated in a double-blind controlled trial (including earlier development phase studies) and then participated in one of two long-term safety studies The design of the long-term safety studies allowed for modification of XELJANZ doses according to clinical judgment This limits the interpretation of the long-term safety data with respect to dose

61 Clinical Trial Experience The most common serious adverse reactions were serious infections [see Warnings and Precautions (51)]

The proportion of patients who discontinued treatment due to any adverse reaction during the 0 to 3 months exposure in the double-blind placebo-controlled trials was 4 for patients taking XELJANZ and 3 for placebo-treated patients

Overall Infections

In the seven controlled trials during the 0 to 3 months exposure the overall frequency of infections was 20 and 22 in the 5 mg twice daily and 10 mg twice daily groups respectively and 18 in the placebo group

The most commonly reported infections with XELJANZ were upper respiratory tract infections nasopharyngitis and urinary tract infections (4 3 and 2 of patients respectively)

8

Reference ID 3213422

Serious Infections In the seven controlled trials during the 0 to 3 months exposure serious infections were reported in 1 patient (05 events per 100 patient-years) who received placebo and 11 patients (17 events per 100 patient-years) who received XELJANZ 5 mg or 10 mg twice daily The rate difference between treatment groups (and the corresponding 95 confidence interval) was 11 (-04 25) events per 100 patient-years for the combined 5 mg twice daily and 10 mg twice daily XELJANZ group minus placebo

In the seven controlled trials during the 0 to 12 months exposure serious infections were reported in 34 patients (27 events per 100 patient-years) who received 5 mg twice daily of XELJANZ and 33 patients (27 events per 100 patient-years) who received 10 mg twice daily of XELJANZ The rate difference between XELJANZ doses (and the corresponding 95 confidence interval) was -01 (-13 12) events per 100 patient-years for 10 mg twice daily XELJANZ minus 5 mg twice daily XELJANZ

The most common serious infections included pneumonia cellulitis herpes zoster and urinary tract infection [see Warnings and Precautions (51)]

Tuberculosis In the seven controlled trials during the 0 to 3 months exposure tuberculosis was not reported in patients who received placebo 5 mg twice daily of XELJANZ or 10 mg twice daily of XELJANZ

In the seven controlled trials during the 0 to 12 months exposure tuberculosis was reported in 0 patients who received 5 mg twice daily of XELJANZ and 6 patients (05 events per 100 patient-years) who received 10 mg twice daily of XELJANZ The rate difference between XELJANZ doses (and the corresponding 95 confidence interval) was 05 (01 09) events per 100 patient-years for 10 mg twice daily XELJANZ minus 5 mg twice daily XELJANZ

Cases of disseminated tuberculosis were also reported The median XELJANZ exposure prior to diagnosis of tuberculosis was 10 months (range from 152 to 960 days) [see Warnings and Precautions (51)]

Opportunistic Infections (excluding tuberculosis) In the seven controlled trials during the 0 to 3 months exposure opportunistic infections were not reported in patients who received placebo 5 mg twice daily of XELJANZ or 10 mg twice daily of XELJANZ

In the seven controlled trials during the 0 to 12 months exposure opportunistic infections were reported in 4 patients (03 events per 100 patient-years) who received 5 mg twice daily of XELJANZ and 4 patients (03 events per 100 patient-years) who received 10 mg twice daily of XELJANZ The rate difference between XELJANZ doses (and the corresponding 95 confidence interval) was 0 (-05 05) events per 100 patient-years for 10 mg twice daily XELJANZ minus 5 mg twice daily XELJANZ

The median XELJANZ exposure prior to diagnosis of an opportunistic infection was 8 months (range from 41 to 698 days) [see Warnings and Precautions (51)]

Malignancy In the seven controlled trials during the 0 to 3 months exposure malignancies excluding NMSC were reported in 0 patients who received placebo and 2 patients (03 events per 100 patientshy

9

Reference ID 3213422

years) who received either XELJANZ 5 mg or 10 mg twice daily The rate difference between treatment groups (and the corresponding 95 confidence interval) was 03 (-01 07) events per 100 patient-years for the combined 5 mg and 10 mg twice daily XELJANZ group minus placebo

In the seven controlled trials during the 0 to 12 months exposure malignancies excluding NMSC were reported in 5 patients (04 events per 100 patient-years) who received 5 mg twice daily of XELJANZ and 7 patients (06 events per 100 patient-years) who received 10 mg twice daily of XELJANZ The rate difference between XELJANZ doses (and the corresponding 95 confidence interval) was 02 (-04 07) events per 100 patient-years for 10 mg twice daily XELJANZ minus 5 mg twice daily XELJANZ One of these malignancies was a case of lymphoma that occurred during the 0 to 12 month period in a patient treated with XELJANZ 10 mg twice daily

The most common types of malignancy including malignancies observed during the long-term extension were lung and breast cancer followed by gastric colorectal renal cell prostate cancer lymphoma and malignant melanoma [see Warnings and Precautions (52)]

Laboratory Tests

Lymphocytes In the controlled clinical trials confirmed decreases in lymphocyte counts below 500 cellsmm3

occurred in 004 of patients for the 5 mg twice daily and 10 mg twice daily XELJANZ groups combined during the first 3 months of exposure

Confirmed lymphocyte counts less than 500 cellsmm3 were associated with an increased incidence of treated and serious infections [see Warnings and Precautions (54)]

Neutrophils In the controlled clinical trials confirmed decreases in ANC below 1000 cellsmm3 occurred in 007 of patients for the 5 mg twice daily and 10 mg twice daily XELJANZ groups combined during the first 3 months of exposure

There were no confirmed decreases in ANC below 500 cellsmm3 observed in any treatment group

There was no clear relationship between neutropenia and the occurrence of serious infections

In the long-term safety population the pattern and incidence of confirmed decreases in ANC remained consistent with what was seen in the controlled clinical trials [see Warnings and Precautions (54)]

Liver Enzyme Tests Confirmed increases in liver enzymes greater than 3 times the upper limit of normal (3x ULN) were observed in patients treated with XELJANZ In patients experiencing liver enzyme elevation modification of treatment regimen such as reduction in the dose of concomitant DMARD interruption of XELJANZ or reduction in XELJANZ dose resulted in decrease or normalization of liver enzymes

In the controlled monotherapy trials (0-3 months) no differences in the incidence of ALT or AST elevations were observed between the placebo and XELJANZ 5 mg and 10 mg twice daily groups

10

Reference ID 3213422

In the controlled background DMARD trials (0-3 months) ALT elevations greater than 3x ULN were observed in 10 13 and 12 of patients receiving placebo 5 mg and 10 mg twice daily respectively In these trials AST elevations greater than 3x ULN were observed in 06 05 and 04 of patients receiving placebo 5 mg and 10 mg twice daily respectively

One case of drug-induced liver injury was reported in a patient treated with XELJANZ 10 mg twice daily for approximately 25 months The patient developed symptomatic elevations of AST and ALT greater than 3x ULN and bilirubin elevations greater than 2x ULN which required hospitalizations and a liver biopsy

Lipids In the controlled clinical trials dose-related elevations in lipid parameters (total cholesterol LDL cholesterol HDL cholesterol triglycerides) were observed at one month of exposure and remained stable thereafter Changes in lipid parameters during the first 3 months of exposure in the controlled clinical trials are summarized below

bull Mean LDL cholesterol increased by 15 in the XELJANZ 5 mg twice daily arm and 19 in the XELJANZ 10 mg twice daily arm

bull Mean HDL cholesterol increased by 10 in the XELJANZ 5 mg twice daily arm and 12 in the XELJANZ 10 mg twice daily arm

bull Mean LDLHDL ratios were essentially unchanged in XELJANZ-treated patients

In a controlled clinical trial elevations in LDL cholesterol and ApoB decreased to pretreatment levels in response to statin therapy

In the long-term safety population elevations in lipid parameters remained consistent with what was seen in the controlled clinical trials

11

Reference ID 3213422

Serum Creatinine In the controlled clinical trials dose-related elevations in serum creatinine were observed with XELJANZ treatment The mean increase in serum creatinine was lt01 mgdL in the 12-month pooled safety analysis however with increasing duration of exposure in the long-term extensions up to 2 of patients were discontinued from XELJANZ treatment due to the protocol-specified discontinuation criterion of an increase in creatinine by more than 50 of baseline The clinical significance of the observed serum creatinine elevations is unknown

Other Adverse Reactions Adverse reactions occurring in 2 or more of patients on 5 mg twice daily or 10 mg twice daily XELJANZ and at least 1 greater than that observed in patients on placebo with or without DMARD are summarized in Table 4

Table 4 Adverse Reactions Occurring in at Least 2 or More of Patients on 5 or 10 mg Twice Daily XELJANZ With or Without DMARD (0-3 months) and at Least 1 Greater Than That Observed in Patients on Placebo

XELJANZ 5 mg Twice Daily

XELJANZ 10 mg Twice Daily

Placebo

Preferred Term N = 1336

() N = 1349

() N = 809

()

Diarrhea 40 29 23

Nasopharyngitis 38 28 28

Upper respiratory tract infection 45 38 33

Headache 43 34 21

Hypertension 16 23 11

N reflects randomized and treated patients from the seven clinical trials

Other adverse reactions occurring in controlled and open-label extension studies included

Blood and lymphatic system disorders Anemia Metabolism and nutrition disorders Dehydration Psychiatric disorders Insomnia Nervous system disorders Paresthesia Respiratory thoracic and mediastinal disorders Dyspnea cough sinus congestion Gastrointestinal disorders Abdominal pain dyspepsia vomiting gastritis nausea Hepatobiliary disorders Hepatic steatosis Skin and subcutaneous tissue disorders Rash erythema pruritus Musculoskeletal connective tissue and bone disorders Musculoskeletal pain arthralgia tendonitis joint swelling General disorders and administration site conditions Pyrexia fatigue peripheral edema

12

Reference ID 3213422

7 DRUG INTERACTIONS

71 Potent CYP3A4 Inhibitors Tofacitinib exposure is increased when XELJANZ is coadministered with potent inhibitors of cytochrome P450 (CYP) 3A4 (eg ketoconazole) [see Dosage and Administration (21) and Figure 3]

72 Moderate CYP3A4 and Potent CYP2C19 Inhibitors Tofacitinib exposure is increased when XELJANZ is coadministered with medications that result in both moderate inhibition of CYP3A4 and potent inhibition of CYP2C19 (eg fluconazole) [see Dosage and Administration (21) and Figure 3]

73 Potent CYP3A4 Inducers Tofacitinib exposure is decreased when XELJANZ is coadministered with potent CYP3A4 inducers (eg rifampin) [see Dosage and Administration (21) and Figure 3]

74 Immunosuppressive Drugs There is a risk of added immunosuppression when XELJANZ is coadministered with potent immunosuppressive drugs (eg azathioprine tacrolimus cyclosporine) Combined use of multiple-dose XELJANZ with potent immunosuppressives has not been studied in rheumatoid arthritis

8 USE IN SPECIFIC POPULATIONS

81 Pregnancy Teratogenic effects Pregnancy Category C There are no adequate and well-controlled studies in pregnant women XELJANZ should be used during pregnancy only if the potential benefit justifies the potential risk to the fetus Tofacitinib has been shown to be fetocidal and teratogenic in rats and rabbits when given at exposures 146 times and 13 times respectively the maximum recommended human dose (MRHD)

In a rat embryofetal developmental study tofacitinib was teratogenic at exposure levels approximately 146 times the MRHD (on an AUC basis at oral doses of 100 mgkgday) Teratogenic effects consisted of external and soft tissue malformations of anasarca and membranous ventricular septal defects respectively and skeletal malformations or variations (absent cervical arch bent femur fibula humerus radius scapula tibia and ulna sternoschisis absent rib misshapen femur branched rib fused rib fused sternebra and hemicentric thoracic centrum) In addition there was an increase in post-implantation loss consisting of early and late resorptions resulting in a reduced number of viable fetuses Mean fetal body weight was reduced No developmental toxicity was observed in rats at exposure levels approximately 58 times the MRHD (on an AUC basis at oral doses of 30 mgkgday) In the rabbit embryofetal developmental study tofacitinib was teratogenic at exposure levels approximately 13 times the MRHD (on an AUC basis at oral doses of 30 mgkgday) in the absence of signs of maternal toxicity Teratogenic effects included thoracogastroschisis omphalocele membranous ventricular septal defects and cranialskeletal malformations (microstomia microphthalmia)

13

Reference ID 3213422

mid-line and tail defects In addition there was an increase in post-implantation loss associated with late resorptions No developmental toxicity was observed in rabbits at exposure levels approximately 3 times the MRHD (on an AUC basis at oral doses of 10 mgkgday)

Nonteratogenic effects In a peri- and postnatal rat study there were reductions in live litter size postnatal survival and pup body weights at exposure levels approximately 73 times the MRHD (on an AUC basis at oral doses of 50 mgkgday) There was no effect on behavioral and learning assessments sexual maturation or the ability of the F1 generation rats to mate and produce viable F2 generation fetuses in rats at exposure levels approximately 17 times the MRHD (on an AUC basis at oral doses of 10 mgkgday)

Pregnancy Registry To monitor the outcomes of pregnant women exposed to XELJANZ a pregnancy registry has been established Physicians are encouraged to register patients and pregnant women are encouraged to register themselves by calling 1-877-311-8972

83 Nursing Mothers Tofacitinib was secreted in milk of lactating rats It is not known whether tofacitinib is excreted in human milk Because many drugs are excreted in human milk and because of the potential for serious adverse reactions in nursing infants from tofacitinib a decision should be made whether to discontinue nursing or to discontinue the drug taking into account the importance of the drug for the mother

84 Pediatric Use The safety and effectiveness of XELJANZ in pediatric patients have not been established

85 Geriatric Use Of the 3315 patients who enrolled in Studies I to V a total of 505 rheumatoid arthritis patients were 65 years of age and older including 71 patients 75 years and older The frequency of serious infection among XELJANZ-treated subjects 65 years of age and older was higher than among those under the age of 65 As there is a higher incidence of infections in the elderly population in general caution should be used when treating the elderly

86 Hepatic Impairment No dose adjustment is required in patients with mild hepatic impairment XELJANZ dose should be reduced to 5 mg once daily in patients with moderate hepatic impairment The safety and efficacy of XELJANZ have not been studied in patients with severe hepatic impairment or in patients with positive hepatitis B virus or hepatitis C virus serology [see Dosage and Administration (21) and Warnings and Precautions (56)]

87 Renal Impairment No dose adjustment is required in patients with mild renal impairment XELJANZ dose should be reduced to 5 mg once daily in patients with moderate and severe renal impairment [see Dosage and Administration (21)] In clinical trials XELJANZ was not evaluated in rheumatoid arthritis patients with baseline creatinine clearance values (estimated by the Cockroft-Gault equation) less than 40 mLmin

14

Reference ID 3213422

10 OVERDOSAGE Signs Symptoms and Laboratory Findings of Acute Overdosage in Humans There is no experience with overdose of XELJANZ

Treatment or Management of Overdose Pharmacokinetic data up to and including a single dose of 100 mg in healthy volunteers indicate that more than 95 of the administered dose is expected to be eliminated within 24 hours

There is no specific antidote for overdose with XELJANZ In case of an overdose it is recommended that the patient be monitored for signs and symptoms of adverse reactions Patients who develop adverse reactions should receive appropriate treatment

11 DESCRIPTION XELJANZ is the citrate salt of tofacitinib a JAK inhibitor

Tofacitinib citrate is a white to off-white powder with the following chemical name (3R4R)-4shymethyl-3-(methyl-7H-pyrrolo [23-d]pyrimidin-4-ylamino)-szlig-oxo-1-piperidinepropanenitrile 2shyhydroxy-123-propanetricarboxylate (11) It is freely soluble in water

Tofacitinib citrate has a molecular weight of 5045 Daltons (or 3124 Daltons as the tofacitinib free base) and a molecular formula of C16H20N6ObullC6H8O7 The chemical structure of tofacitinib citrate is

NN

Me

Me

N

N N H

O N

HO2C CO2H

HO2C

OH bull

XELJANZ is supplied for oral administration as 5 mg tofacitinib (equivalent to 8 mg tofacitinib citrate) white round immediate-release film-coated tablet Each tablet of XELJANZ contains the appropriate amount of XELJANZ as a citrate salt and the following inactive ingredients microcrystalline cellulose lactose monohydrate croscarmellose sodium magnesium stearate HPMC 2910Hypromellose 6cP titanium dioxide macrogolPEG3350 and triacetin

12 CLINICAL PHARMACOLOGY

121 Mechanism of Action Tofacitinib is a Janus kinase (JAK) inhibitor JAKs are intracellular enzymes which transmit signals arising from cytokine or growth factor-receptor interactions on the cellular membrane to influence cellular processes of hematopoiesis and immune cell function Within the signaling pathway JAKs phosphorylate and activate Signal Transducers and Activators of Transcription (STATs) which modulate intracellular activity including gene expression Tofacitinib modulates

15

Reference ID 3213422

the signaling pathway at the point of JAKs preventing the phosphorylation and activation of STATs JAK enzymes transmit cytokine signaling through pairing of JAKs (eg JAK1JAK3 JAK1JAK2 JAK1TyK2 JAK2JAK2) Tofacitinib inhibited the in vitro activities of JAK1JAK2 JAK1JAK3 and JAK2JAK2 combinations with IC50 of 406 56 and 1377 nM respectively However the relevance of specific JAK combinations to therapeutic effectiveness is not known

122 Pharmacodynamics Treatment with XELJANZ was associated with dose-dependent reductions of circulating CD1656+ natural killer cells with estimated maximum reductions occurring at approximately 8shy10 weeks after initiation of therapy These changes generally resolved within 2-6 weeks after discontinuation of treatment Treatment with XELJANZ was associated with dose-dependent increases in B cell counts Changes in circulating T-lymphocyte counts and T-lymphocyte subsets (CD3+ CD4+ and CD8+) were small and inconsistent The clinical significance of these changes is unknown

Total serum IgG IgM and IgA levels after 6-month dosing in patients with rheumatoid arthritis were lower than placebo however changes were small and not dose-dependent

After treatment with XELJANZ in patients with rheumatoid arthritis rapid decreases in serum C-reactive protein (CRP) were observed and maintained throughout dosing Changes in CRP observed with XELJANZ treatment do not reverse fully within 2 weeks after discontinuation indicating a longer duration of pharmacodynamic activity compared to the pharmacokinetic half-life

123 Pharmacokinetics Following oral administration of XELJANZ peak plasma concentrations are reached within 05shy1 hour elimination half-life is ~3 hours and a dose-proportional increase in systemic exposure was observed in the therapeutic dose range Steady state concentrations are achieved in 24-48 hours with negligible accumulation after twice daily administration

Absorption The absolute oral bioavailability of tofacitinib is 74 Coadministration of XELJANZ with a high-fat meal resulted in no changes in AUC while Cmax was reduced by 32 In clinical trials XELJANZ was administered without regard to meals

Distribution After intravenous administration the volume of distribution is 87 L The protein binding of tofacitinib is ~40 Tofacitinib binds predominantly to albumin and does not appear to bind to 1-acid glycoprotein Tofacitinib distributes equally between red blood cells and plasma

Metabolism and Elimination Clearance mechanisms for tofacitinib are approximately 70 hepatic metabolism and 30 renal excretion of the parent drug The metabolism of tofacitinib is primarily mediated by CYP3A4 with minor contribution from CYP2C19 In a human radiolabeled study more than 65 of the total circulating radioactivity was accounted for by unchanged tofacitinib with the remaining

16

Reference ID 3213422

35 attributed to 8 metabolites each accounting for less than 8 of total radioactivity The pharmacologic activity of tofacitinib is attributed to the parent molecule

Pharmacokinetics in Rheumatoid Arthritis Patients Population PK analysis in rheumatoid arthritis patients indicated no clinically relevant change in tofacitinib exposure after accounting for differences in renal function (ie creatinine clearance) between patients based on age weight gender and race (Figure 1) An approximately linear relationship between body weight and volume of distribution was observed resulting in higher peak (Cmax) and lower trough (Cmin) concentrations in lighter patients However this difference is not considered to be clinically relevant The between-subject variability ( coefficient of variation) in AUC of tofacitinib is estimated to be approximately 27

Specific Populations The effect of renal and hepatic impairment and other intrinsic factors on the pharmacokinetics of tofacitinib is shown in Figure 1

17

Reference ID 3213422

Figure 1 Impact of Intrinsic Factors on Tofacitinib Pharmacokinetics

Intrinsic Factor

Weight = 40 kg

Weight = 140 kg

Age = 80 years

Female

Asian

Black

Hispanic

Renal Impairment (Mild)

Renal Impairment (Moderate)

Renal Impairment (Severe)

Hepatic Impairment (Mild)

Hepatic Impairment (Moderate)

PK

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

0

Ratio and 90 CI Recommendation

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

Reduce Dose to 5 mg Once Daily

Reduce Dose to 5 mg Once Daily

No Dose Adjustment

Reduce Dose to 5 mg Once Daily

05 1 15 2 25 3 35 4

Ratio relative to reference

Supplemental doses are not necessary in patients after dialysis

Reference values for weight age gender and race comparisons are 70 kg 55 years male and White respectively Reference groups for renal and hepatic impairment data are subjects with normal renal and hepatic function

Drug Interactions

Potential for XELJANZ to Influence the PK of Other Drugs In vitro studies indicate that tofacitinib does not significantly inhibit or induce the activity of the

18

Reference ID 3213422

major human drug-metabolizing CYPs (CYP1A2 CYP2B6 CYP2C8 CYP2C9 CYP2C19 CYP2D6 and CYP3A4) at concentrations exceeding 185 times the steady state Cmax of a 5 mg twice daily dose These in vitro results were confirmed by a human drug interaction study showing no changes in the PK of midazolam a highly sensitive CYP3A4 substrate when coadministered with XELJANZ

In rheumatoid arthritis patients the oral clearance of tofacitinib does not vary with time indicating that tofacitinib does not normalize CYP enzyme activity in rheumatoid arthritis patients Therefore coadministration with XELJANZ is not expected to result in clinically relevant increases in the metabolism of CYP substrates in rheumatoid arthritis patients

In vitro data indicate that the potential for tofacitinib to inhibit transporters such as Pshyglycoprotein organic anionic or cationic transporters at therapeutic concentrations is low

Dosing recommendations for coadministered drugs following administration with XELJANZ are shown in Figure 2

Figure 2 Impact of XELJANZ on PK of Other Drugs

Coadministered PK Drug

Methotrexate AUC

Cmax

CYP3A Substrate AUC Midazolam

Cmax

Oral ContraceptivesLevonorgestrel

AUC

Cmax

Ethinyl Estradiol AUC

Cmax

OCT amp MATE Substrate AUC Metformin

Cmax

Ratio and 90 CI Recommendation

No Dose Adjustment

No dose adjustment for CYP3A substrates such as midazolam

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

0 025 05 075 1 125 15 175 2

Ratio relative to reference

Note Reference group is administration of concomitant medication alone OCT = Organic Cationic Transporter MATE = Multidrug and Toxic Compound Extrusion

Potential for Other Drugs to Influence the PK of Tofacitinib Since tofacitinib is metabolized by CYP3A4 interaction with drugs that inhibit or induce CYP3A4 is likely Inhibitors of CYP2C19 alone or P-glycoprotein are unlikely to substantially alter the PK of tofacitinib Dosing recommendations for XELJANZ for administration with CYP inhibitors or inducers are shown in Figure 3

19

Reference ID 3213422

Figure 3 Impact of Other Drugs on PK of XELJANZ

Coadministered PK Drug

CYP3A Inhib itor AUC Ketoconazole

Cmax

CYP3A amp CYP2C19 Inhib itor AUC

Cmax Fluconazole

CYP Inducer Rifampin AUC

Cmax

Methotrexate AUC

Cmax

Tacrolimus AUC Cmax

Cyclosporine AUC

Cmax

Ratio and 90 CI Recommendation

Reduce XELJANZ Dose to 5 mg Once Daily

Reduce XELJANZ Dose to 5 mg Once Daily

May Decrease Efficacy

No Dose Adjustment

There is a risk of added immunosuppressionif XELJANZ is taken with Tacrolimus

There is a risk of added immunosuppressionif XELJANZ is taken with Cyclosporine

0 05 1 15 2 25

Ratio relative to reference

Note Reference group is administration of tofacitinib alone

13 NONCLINICAL TOXICOLOGY

131 Carcinogenesis Mutagenesis Impairment of Fertility In a 39-week toxicology study in monkeys tofacitinib at exposure levels approximately 6 times the MRHD (on an AUC basis at oral doses of 5 mgkg twice daily) produced lymphomas No lymphomas were observed in this study at exposure levels 1 times the MRHD (on an AUC basis at oral doses of 1 mgkg twice daily)

The carcinogenic potential of tofacitinib was assessed in 6-month rasH2 transgenic mouse carcinogenicity and 2-year rat carcinogenicity studies Tofacitinib at exposure levels approximately 34 times the MRHD (on an AUC basis at oral doses of 200 mgkgday) was not carcinogenic in mice

In the 24-month oral carcinogenicity study in Sprague-Dawley rats tofacitinib caused benign Leydig cell tumors hibernomas (malignancy of brown adipose tissue) and benign thymomas at doses greater than or equal to 30 mgkgday (approximately 42 times the exposure levels at the MRHD on an AUC basis) The relevance of benign Leydig cell tumors to human risk is not known

20

Reference ID 3213422

Tofacitinib was not mutagenic in the bacterial reverse mutation assay It was positive for clastogenicity in the in vitro chromosome aberration assay with human lymphocytes in the presence of metabolic enzymes but negative in the absence of metabolic enzymes Tofacitinib was negative in the in vivo rat micronucleus assay and in the in vitro CHO-HGPRT assay and the in vivo rat hepatocyte unscheduled DNA synthesis assay

In rats tofacitinib at exposure levels approximately 17 times the MRHD (on an AUC basis at oral doses of 10 mgkgday) reduced female fertility due to increased post-implantation loss There was no impairment of female rat fertility at exposure levels of tofacitinib equal to the MRHD (on an AUC basis at oral doses of 1 mgkgday) Tofacitinib exposure levels at approximately 133 times the MRHD (on an AUC basis at oral doses of 100 mgkgday) had no effect on male fertility sperm motility or sperm concentration

14 CLINICAL STUDIES The XELJANZ clinical development program included two dose-ranging trials and five confirmatory trials

DOSE-RANGING TRIALS Dose selection for XELJANZ was based on two pivotal dose-ranging trials

Dose-Ranging Study 1 was a 6-month monotherapy trial in 384 patients with active rheumatoid arthritis who had an inadequate response to a DMARD Patients who previously received adalimumab therapy were excluded Patients were randomized to 1 of 7 monotherapy treatments XELJANZ 1 3 5 10 or 15 mg twice daily adalimumab 40 mg subcutaneously every other week for 10 weeks followed by XELJANZ 5 mg twice daily for 3 months or placebo

Dose-Ranging Study 2 was a 6-month trial in which 507 patients with active rheumatoid arthritis who had an inadequate response to MTX alone received one of 6 dose regimens of XELJANZ (20 mg once daily 1 3 5 10 or 15 mg twice daily) or placebo added to background MTX

The results of XELJANZ-treated patients achieving ACR20 responses in Studies 1 and 2 are shown in Figure 4 Although a dose-response relationship was observed in Study 1 the proportion of patients with an ACR20 response did not clearly differ between the 10 mg and 15 mg doses Furthermore there was a smaller proportion of patients who responded to adalimumab monotherapy compared to those treated with XELJANZ doses 3 mg twice daily and greater In Study 2 a smaller proportion of patients achieved an ACR20 response in the placebo and XELJANZ 1 mg groups compared to patients treated with the other XELJANZ doses However there was no difference in the proportion of responders among patients treated with XELJANZ 3 5 10 15 mg twice daily or 20 mg once daily doses

21

Reference ID 3213422

Figure 4 Proportion of Patients with ACR20 Response at Month 3 in Dose-Ranging Studies 1 and 2

CONFIRMATORY TRIALS Study I was a 6-month monotherapy trial in which 610 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to a DMARD (nonbiologic or biologic) received XELJANZ 5 or 10 mg twice daily or placebo At the Month 3 visit all patients randomized to placebo treatment were advanced in a blinded fashion to a second predetermined treatment of XELJANZ 5 or 10 mg twice daily The primary endpoints at Month 3 were the proportion of patients who achieved an ACR20 response changes in Health Assessment Questionnaire ndash Disability Index (HAQ-DI) and rates of Disease Activity Score DAS28-4(ESR) less than 26

Study II was a 12-month trial in which 792 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to a nonbiologic DMARD received XELJANZ 5 or 10 mg twice daily or placebo added to background DMARD treatment (excluding potent immunosuppressive treatments such as azathioprine or cyclosporine) At the Month 3 visit nonresponding patients were advanced in a blinded fashion to a second predetermined treatment of XELJANZ 5 or 10 mg twice daily At the end of Month 6 all placebo patients were advanced to their second predetermined treatment in a blinded fashion The primary endpoints were the proportion of patients who achieved an ACR20 response at Month 6 changes in HAQ-DI at Month 3 and rates of DAS28-4(ESR) less than 26 at Month 6

Study III was a 12-month trial in 717 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to MTX Patients received XELJANZ 5 or 10 mg twice daily adalimumab 40 mg subcutaneously every other week or placebo added to background MTX

22

Reference ID 3213422

Placebo patients were advanced as in Study II The primary endpoints were the proportion of patients who achieved an ACR20 response at Month 6 HAQ-DI at Month 3 and DAS28-4(ESR) less than 26 at Month 6

Study IV is an ongoing 2-year trial with a planned analysis at 1 year in which 797 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to MTX received XELJANZ 5 or 10 mg twice daily or placebo added to background MTX Placebo patients were advanced as in Study II The primary endpoints were the proportion of patients who achieved an ACR20 response at Month 6 mean change from baseline in van der Heijde-modified total Sharp Score (mTSS) at Month 6 HAQ-DI at Month 3 and DAS28-4(ESR) less than 26 at Month 6

Study V was a 6-month trial in which 399 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to at least one approved TNF-inhibiting biologic agent received XELJANZ 5 or 10 mg twice daily or placebo added to background MTX At the Month 3 visit all patients randomized to placebo treatment were advanced in a blinded fashion to a second predetermined treatment of XELJANZ 5 or 10 mg twice daily The primary endpoints at Month 3 were the proportion of patients who achieved an ACR20 response HAQ-DI and DAS28-4(ESR) less than 26

Clinical Response The percentages of XELJANZ-treated patients achieving ACR20 ACR50 and ACR70 responses in Studies I IV and V are shown in Table 5 Similar results were observed with Studies II and III In all trials patients treated with either 5 or 10 mg twice daily XELJANZ had higher ACR20 ACR50 and ACR70 response rates versus placebo with or without background DMARD treatment at Month 3 and Month 6 Higher ACR20 response rates were observed within 2 weeks compared to placebo In the 12-month trials ACR response rates in XELJANZ-treated patients were consistent at 6 and 12 months

23

Reference ID 3213422

Table 5 Proportion of Patients with an ACR Response Percent of Patients

Monotherapy in Nonbiologic or Biologic DMARD Inadequate

Respondersc

MTX Inadequate Respondersd TNF Inhibitor Inadequate Responderse

Study I Study IV Study V

Na PBO

122

XELJANZ 5 mg Twice

Daily

243

XELJANZ 10 mg Twice Daily

245

PBO + MTX

160

XELJANZ 5 mg Twice

Daily + MTX

321

XELJANZ 10 mg Twice

Daily + MTX

316

PBO +

MTX

132

XELJANZ 5 mg Twice

Daily + MTX

133

XELJANZ 10 mg Twice

Daily + MTX

134 ACR20 Month 3 Month 6

26 NAb

59 69

65 70

27 25

55 50

67 62

24 NA

41 51

48 54

ACR50 Month 3 Month 6

12 NA

31 42

36 46

8 9

29 32

37 44

8 NA

26 37

28 30

ACR70 Month 3 Month 6

6 NA

15 22

20 29

3 1

11 14

17 23

2 NA

14 16

10 16

a N is number of randomized and treated patients b NA Not applicable as data for placebo treatment is not available beyond 3 months in Studies I and V due to placebo advancement c Inadequate response to at least one DMARD (biologic or nonbiologic) due to lack of efficacy or toxicity d Inadequate response to MTX defined as the presence of sufficient residual disease activity to meet the entry criteria e Inadequate response to a least one TNF inhibitor due to lack of efficacy andor intolerance

In Study IV a greater proportion of patients treated with XELJANZ 5 mg or 10 mg twice daily plus MTX achieved a low level of disease activity as measured by a DAS28-4(ESR) less than 26 at 6 months compared to those treated with MTX alone (Table 6)

24

Reference ID 3213422

Table 6 Proportion of Patients with DAS28-4(ESR) Less Than 26 with Number of Residual Active Joints Study IV DAS28-4(ESR) Less Than 26 Placebo + MTX

160

XELJANZ 5 mg Twice Daily + MTX

321

XELJANZ 10 mg Twice Daily + MTX

316 Proportion of responders at Month 6 (n) 1 (2) 6 (19) 13 (42)

Of responders proportion with 0 active joints (n)

50 (1) 42 (8) 36 (15)

Of responders proportion with 1 active joint (n) 0 5 (1) 17 (7) Of responders proportion with 2 active joints (n)

0 32 (6) 7 (3)

Of responders proportion with 3 or more active joints (n)

50 (1) 21 (4) 40 (17)

The results of the components of the ACR response criteria for Study IV are shown in Table 7 Similar results were observed in Studies I II III and V

Table 7 Components of ACR Response at 3 Months Study IV

XELJANZ

5 mg

Twice Daily + MTX

N=321

XELJANZ

10 mg

Twice Daily + MTX

N=316

Placebo + MTX

N=160

Component (mean) a Baseline Month 3a Baseline Month 3a Baseline Month 3a

Number of tender

joints 24 13 23 10 23 18

(0-68) (14) (14) (15) (12) (13) (14)

Number of swollen

joints 14 6 14 6 14 10

(0-66) (8) (8) (8) (7) (9) (9)

Painb 58

(23)

34

(23)

58

(24)

29

(22)

55

(24)

47

(24)

Patient global

assessmentb

58

(24)

35

(23)

57

(23)

29

(20)

54

(23)

47

(24)

Disability index

(HAQ-DI)c 141 099 140 084 132 119

(068) (065) (066) (064) (067) (068)

25

Reference ID 3213422

Physician global

assessmentb 59 30 58 24 56 43

(16) (19) (17) (17) (18) (22)

CRP (mgL) 153 71 171 44 137 146

(190) (191) (269) (86) (149) (187) aData shown is mean (Standard Deviation) at Month 3bVisual analog scale 0 = best 100 = worst cHealth Assessment Questionnaire Disability Index 0 = best 3 = worst 20 questions categories dressing and grooming arising eating walking hygiene reach grip and activities

The percent of ACR20 responders by visit for Study IV is shown in Figure 5 Similar responses were observed in Studies I II III and V

Figure 5 Percentage of ACR20 Responders by Visit for Study IV

Physical Function Response Improvement in physical functioning was measured by the HAQ-DI Patients receiving XELJANZ 5 and 10 mg twice daily demonstrated greater improvement from baseline in physical functioning compared to placebo at Month 3

The mean (95 CI) difference from placebo in HAQ-DI improvement from baseline at Month 3 in Study III was -022 (-035 -010) in patients receiving 5 mg XELJANZ twice daily and -032 (-044 -019) in patients receiving 10 mg XELJANZ twice daily Similar results were obtained in

26

Reference ID 3213422

Studies I II IV and V In the 12-month trials HAQ-DI results in XELJANZ-treated patients were consistent at 6 and 12 months

16 HOW SUPPLIEDSTORAGE AND HANDLING XELJANZ is provided as 5 mg tofacitinib (equivalent to 8 mg tofacitinib citrate) tablets White round immediate-release film-coated tablets debossed with ldquoPfizerrdquo on one side and ldquoJKI 5rdquo on the other side and available in

Bottles of 60 NDC 0069-1001-01 Bottles of 180 NDC 0069-1001-02

Storage and Handling Store at 20degC to 25degC (68degF to 77degF) [See USP Controlled Room Temperature]

Do not repackage

17 PATIENT COUNSELING INFORMATION See FDA-approved patient labeling (Medication Guide)

Inform patients of the availability of a Medication Guide and instruct them to read the Medication Guide prior to taking XELJANZ Instruct patients to take XELJANZ only as prescribed

This productrsquos label may have been updated For current full prescribing information please visit wwwpfizercom

LAB-0445-10

27

Reference ID 3213422

MEDICATION GUIDE

XELJANZ (ZELrsquo JANSrsquo) (tofacitinib)

Read this Medication Guide before you start taking XELJANZ and each time you get a refill There may be new information This Medication Guide does not take the place of talking to your healthcare provider about your medical condition or treatment

What is the most important information I should know about XELJANZ XELJANZ may cause serious side effects including

1 Serious infections

XELJANZ is a medicine that affects your immune system XELJANZ can lower the ability of your immune system to fight infections Some people have serious infections while taking XELJANZ including tuberculosis (TB) and infections caused by bacteria fungi or viruses that can spread throughout the body Some people have died from these infections Your healthcare provider should test you for TB before starting XELJANZ Your healthcare provider should monitor you closely for signs and symptoms of

TB infection during treatment with XELJANZ

You should not start taking XELJANZ if you have any kind of infection unless your healthcare provider tells you it is okay

Before starting XELJANZ tell your healthcare provider if you think you have an infection or have symptoms of an infection such as

o fever sweating or chills o warm red or painful skin o muscle aches or sores on your body o cough o diarrhea or stomach pain o shortness of breath o burning when you urinate o blood in phlegm or urinating more often o weight loss than normal

o feeling very tired are being treated for an infection get a lot of infections or have infections that keep coming back have diabetes HIV or a weak immune system People with these conditions

have a higher chance for infections have TB or have been in close contact with someone with TB live or have lived or have traveled to certain parts of the country (such as the

Ohio and Mississippi River valleys and the Southwest) where there is an increased chance for getting certain kinds of fungal infections (histoplasmosis coccidioidomycosis or blastomycosis) These infections may happen or become more severe if you use XELJANZ Ask your healthcare provider if you do not know if you have lived in an area where these infections are common

have or have had hepatitis B or C

28

Reference ID 3213422

After starting XELJANZ call your healthcare provider right away if you have any symptoms of an infection XELJANZ can make you more likely to get infections or make worse any infection that you have

2 Cancer and immune system problems

XELJANZ may increase your risk of certain cancers by changing the way your immune system works

Lymphoma and other cancers can happen in patients taking XELJANZ Tell your healthcare provider if you have ever had any type of cancer

Some people who have taken XELJANZ with certain other medicines to prevent kidney transplant rejection have had a problem with certain white blood cells growing out of control (Epstein Barr Virus-associated post transplant lymphoproliferative disorder)

3 Tears (perforation) in the stomach or intestines

Tell your healthcare provider if you have had diverticulitis (inflammation in parts of the large intestine) or ulcers in your stomach or intestines Some people taking XELJANZ get tears in their stomach or intestine This happens most often in people who also take nonsteroidal anti-inflammatory drugs (NSAIDs) corticosteroids or methotrexate

Tell your healthcare provider right away if you have fever and stomach-area pain that does not go away and a change in your bowel habits

4 Changes in certain laboratory test results Your healthcare provider should do blood tests before you start receiving XELJANZ and while you take XELJANZ to check for the following side effects

changes in lymphocyte counts Lymphocytes are white blood cells that help the body fight off infections

low neutrophil counts Neutrophils are white blood cells that help the body fight off infections

low red blood cell count This may mean that you have anemia which may make you feel weak and tired

Your healthcare provider should routinely check certain liver tests

You should not receive XELJANZ if your lymphocyte count neutrophil count or red blood cell count is too low or your liver tests are too high

Your healthcare provider may stop your XELJANZ treatment for a period of time if needed because of changes in these blood test results

29

Reference ID 3213422

You may also have changes in other laboratory tests such as your blood cholesterol levels Your healthcare provider should do blood tests to check your cholesterol levels 4 to 8 weeks after you start receiving XELJANZ and as needed after that Normal cholesterol levels are important to good heart health

See ldquoWhat are the possible side effects of XELJANZrdquo for more information about side effects

What is XELJANZ

XELJANZ is a prescription medicine called a Janus kinase (JAK) inhibitor XELJANZ is used to treat adults with moderately to severely active rheumatoid arthritis in which methotrexate did not work well

It is not known if XELJANZ is safe and effective in people with Hepatitis B or C

XELJANZ is not for people with severe liver problems

It is not known if XELJANZ is safe and effective in children

What should I tell my healthcare provider before taking XELJANZ

XELJANZ may not be right for you Before taking XELJANZ tell your healthcare provider if you have an infection See ldquoWhat is the most important information I should know

about XELJANZrdquo have liver problems have kidney problems have any stomach area (abdominal) pain or been diagnosed with diverticulitis or

ulcers in your stomach or intestines have had a reaction to tofacitinib or any of the ingredients in XELJANZ have recently received or are scheduled to receive a vaccine People who take

XELJANZ should not receive live vaccines People taking XELJANZ can receive non-live vaccines

have any other medical conditions plan to become pregnant or are pregnant It is not known if XELJANZ will harm

an unborn baby

Pregnancy Registry Pfizer has a registry for pregnant women who take XELJANZ The purpose of this registry is to check the health of the pregnant mother and her baby If you are pregnant or become pregnant while taking XELJANZ talk to your healthcare provider about how you can join this pregnancy registry or you may contact the registry at 1-877-311-8972 to enroll

plan to breastfeed or are breastfeeding You and your healthcare provider should decide if you will take XELJANZ or breastfeed You should not do both

30

Reference ID 3213422

Tell your healthcare provider about all the medicines you take including prescription and non-prescription medicines vitamins and herbal supplements XELJANZ and other medicines may affect each other causing side effects

Especially tell your healthcare provider if you take any other medicines to treat your rheumatoid arthritis You should not take

tocilizumab (Actemrareg) etanercept (Enbrelreg) adalimumab (Humirareg) infliximab (Remicadereg) rituximab (Rituxanreg) abatacept (Orenciareg) anakinra (Kineretreg) certolizumab (Cimziareg) golimumab (Simponireg) azathioprine cyclosporine or other immunosuppressive drugs while you are taking XELJANZ Taking XELJANZ with these medicines may increase your risk of infection

medicines that affect the way certain liver enzymes work Ask your healthcare provider if you are not sure if your medicine is one of these

Know the medicines you take Keep a list of them to show your healthcare provider and pharmacist when you get a new medicine

How should I take XELJANZ

Take XELJANZ as your healthcare provider tells you to take it

Take XELJANZ 2 times a day with or without food

If you take too much XELJANZ call your healthcare provider or go the nearest hospital emergency room right away

What are possible side effects of XELJANZ

XELJANZ may cause serious side effects including

See ldquoWhat is the most important information I should know about XELJANZrdquo

Hepatitis B or C activation infection in people who carry the virus in their blood If you are a carrier of the hepatitis B or C virus (viruses that affect the liver) the virus may become active while you use XELJANZ Your healthcare provider may do blood tests before you start treatment with XELJANZ and while you are using XELJANZ Tell your healthcare provider if you have any of the following symptoms of a possible hepatitis B or C infection

o feel very tired o fevers o skin or eyes look yellow o chills o little or no appetite o stomach discomfort o vomiting o muscle aches o clay-colored bowel o dark urine

movements o skin rash

31

Reference ID 3213422

Common side effects of XELJANZ include upper respiratory tract infections (common cold sinus infections) headache diarrhea nasal congestion sore throat and runny nose (nasopharyngitis)

Tell your healthcare provider if you have any side effect that bothers you or that does not go away

These are not all the possible side effects of XELJANZ For more information ask your healthcare provider or pharmacist

Call your doctor for medical advice about side effects You may report side effects to FDA at 1-800-FDA-1088

You may also report side effects to Pfizer at 1-800-438-1985

How should I store XELJANZ

Store XELJANZ at 68degF to 77degF (room temperature)

Safely throw away medicine that is out of date or no longer needed

Keep XELJANZ and all medicines out of the reach of children

General information about the safe and effective use of XELJANZ

Medicines are sometimes prescribed for purposes other than those listed in a Medication Guide Do not use XELJANZ for a condition for which it was not prescribed Do not give XELJANZ to other people even if they have the same symptoms you have It may harm them

This Medication Guide summarizes the most important information about XELJANZ If you would like more information talk to your healthcare provider You can ask your pharmacist or healthcare provider for information about XELJANZ that is written for health professionals

What are the ingredients in XELJANZ

Active ingredient tofacitinib citrate

Inactive ingredients microcrystalline cellulose lactose monohydrate croscarmellose sodium magnesium stearate HPMC 2910Hypromellose 6cP titanium dioxide macrogolPEG3350 and triacetin

32

Reference ID 3213422

This Medication Guide has been approved by the US Food and Drug Administration

LAB-0535-10 Issued November 2012

33

Reference ID 3213422

In the seven controlled rheumatoid arthritis clinical studies 11 solid cancers and one lymphoma were diagnosed in 3328 patients receiving XELJANZ with or without DMARD compared to 0 solid cancers and 0 lymphomas in 809 patients in the placebo with or without DMARD group during the first 12 months of exposure Lymphomas and solid cancers have also been observed in the long-term extension studies in rheumatoid arthritis patients treated with XELJANZ

In Phase 2B controlled dose-ranging trials in de-novo renal transplant patients all of whom received induction therapy with basiliximab high dose corticosteroids and mycophenolic acid products Epstein Barr Virus-associated post-transplant lymphoproliferative disorder was observed in 5 out of 218 patients treated with XELJANZ (23) compared to 0 out of 111 patients treated with cyclosporine

53 Gastrointestinal Perforations Events of gastrointestinal perforation have been reported in clinical studies with XELJANZ in rheumatoid arthritis patients although the role of JAK inhibition in these events is not known

XELJANZ should be used with caution in patients who may be at increased risk for gastrointestinal perforation (eg patients with a history of diverticulitis) Patients presenting with new onset abdominal symptoms should be evaluated promptly for early identification of gastrointestinal perforation [see Adverse Reactions (61)]

54 Laboratory Parameters

Lymphocytes Treatment with XELJANZ was associated with initial lymphocytosis at one month of exposure followed by a gradual decrease in mean lymphocyte counts below the baseline of approximately 10 during 12 months of therapy Lymphocyte counts less than 500 cellsmm3 were associated with an increased incidence of treated and serious infections

Avoid initiation of XELJANZ treatment in patients with a low lymphocyte count (ie less than 500 cellsmm3) In patients who develop a confirmed absolute lymphocyte count less than 500 cellsmm3 treatment with XELJANZ is not recommended

Monitor lymphocyte counts at baseline and every 3 months thereafter For recommended modifications based on lymphocyte counts see Dosage and Administration (23)

Neutrophils Treatment with XELJANZ was associated with an increased incidence of neutropenia (less than 2000 cellsmm3) compared to placebo

Avoid initiation of XELJANZ treatment in patients with a low neutrophil count (ie ANC less than 1000 cellsmm3) For patients who develop a persistent ANC of 500-1000 cellsmm3 interrupt XELJANZ dosing until ANC is greater than or equal to 1000 cellsmm3 In patients who develop an ANC less than 500 cellsmm3 treatment with XELJANZ is not recommended

6

Reference ID 3213422

Monitor neutrophil counts at baseline and after 4-8 weeks of treatment and every 3 months thereafter For recommended modifications based on ANC results see Dosage and Administration (23)

Hemoglobin Avoid initiation of XELJANZ treatment in patients with a low hemoglobin level (ie less than 9 gdL) Treatment with XELJANZ should be interrupted in patients who develop hemoglobin levels less than 8 gdL or whose hemoglobin level drops greater than 2 gdL on treatment

Monitor hemoglobin at baseline and after 4-8 weeks of treatment and every 3 months thereafter For recommended modifications based on hemoglobin results see Dosage and Administration (23)

Liver Enzymes Treatment with XELJANZ was associated with an increased incidence of liver enzyme elevation compared to placebo Most of these abnormalities occurred in studies with background DMARD (primarily methotrexate) therapy

Routine monitoring of liver tests and prompt investigation of the causes of liver enzyme elevations is recommended to identify potential cases of drug-induced liver injury If drug-induced liver injury is suspected the administration of XELJANZ should be interrupted until this diagnosis has been excluded

Lipids Treatment with XELJANZ was associated with increases in lipid parameters including total cholesterol low-density lipoprotein (LDL) cholesterol and high-density lipoprotein (HDL) cholesterol Maximum effects were generally observed within 6 weeks The effect of these lipid parameter elevations on cardiovascular morbidity and mortality has not been determined

Assessment of lipid parameters should be performed approximately 4-8 weeks following initiation of XELJANZ therapy

Manage patients according to clinical guidelines [eg National Cholesterol Educational Program (NCEP)] for the management of hyperlipidemia

55 Vaccinations No data are available on the response to vaccination or on the secondary transmission of infection by live vaccines to patients receiving XELJANZ Live vaccines should not be given concurrently with XELJANZ

Update immunizations in agreement with current immunization guidelines prior to initiating XELJANZ therapy

7

Reference ID 3213422

56 Hepatic Impairment Treatment with XELJANZ is not recommended in patients with severe hepatic impairment [see Adverse Reactions (61) and Use in Specific Populations (86)]

6 ADVERSE REACTIONS Because clinical studies are conducted under widely varying conditions adverse reaction rates observed in the clinical studies of a drug cannot be directly compared to rates in the clinical studies of another drug and may not predict the rates observed in a broader patient population in clinical practice

The following data includes two Phase 2 and five Phase 3 double-blind controlled multicenter trials In these trials patients were randomized to doses of XELJANZ 5 mg twice daily (292 patients) and 10 mg twice daily (306 patients) monotherapy XELJANZ 5 mg twice daily (1044 patients) and 10 mg twice daily (1043 patients) in combination with DMARDs (including methotrexate) and placebo (809 patients) All seven protocols included provisions for patients taking placebo to receive treatment with XELJANZ at Month 3 or Month 6 either by patient response (based on uncontrolled disease activity) or by design so that adverse events cannot always be unambiguously attributed to a given treatment Therefore some analyses that follow include patients who changed treatment by design or by patient response from placebo to XELJANZ in both the placebo and XELJANZ group of a given interval Comparisons between placebo and XELJANZ were based on the first 3 months of exposure and comparisons between XELJANZ 5 mg twice daily and XELJANZ 10 mg twice daily were based on the first 12 months of exposure

The long-term safety population includes all patients who participated in a double-blind controlled trial (including earlier development phase studies) and then participated in one of two long-term safety studies The design of the long-term safety studies allowed for modification of XELJANZ doses according to clinical judgment This limits the interpretation of the long-term safety data with respect to dose

61 Clinical Trial Experience The most common serious adverse reactions were serious infections [see Warnings and Precautions (51)]

The proportion of patients who discontinued treatment due to any adverse reaction during the 0 to 3 months exposure in the double-blind placebo-controlled trials was 4 for patients taking XELJANZ and 3 for placebo-treated patients

Overall Infections

In the seven controlled trials during the 0 to 3 months exposure the overall frequency of infections was 20 and 22 in the 5 mg twice daily and 10 mg twice daily groups respectively and 18 in the placebo group

The most commonly reported infections with XELJANZ were upper respiratory tract infections nasopharyngitis and urinary tract infections (4 3 and 2 of patients respectively)

8

Reference ID 3213422

Serious Infections In the seven controlled trials during the 0 to 3 months exposure serious infections were reported in 1 patient (05 events per 100 patient-years) who received placebo and 11 patients (17 events per 100 patient-years) who received XELJANZ 5 mg or 10 mg twice daily The rate difference between treatment groups (and the corresponding 95 confidence interval) was 11 (-04 25) events per 100 patient-years for the combined 5 mg twice daily and 10 mg twice daily XELJANZ group minus placebo

In the seven controlled trials during the 0 to 12 months exposure serious infections were reported in 34 patients (27 events per 100 patient-years) who received 5 mg twice daily of XELJANZ and 33 patients (27 events per 100 patient-years) who received 10 mg twice daily of XELJANZ The rate difference between XELJANZ doses (and the corresponding 95 confidence interval) was -01 (-13 12) events per 100 patient-years for 10 mg twice daily XELJANZ minus 5 mg twice daily XELJANZ

The most common serious infections included pneumonia cellulitis herpes zoster and urinary tract infection [see Warnings and Precautions (51)]

Tuberculosis In the seven controlled trials during the 0 to 3 months exposure tuberculosis was not reported in patients who received placebo 5 mg twice daily of XELJANZ or 10 mg twice daily of XELJANZ

In the seven controlled trials during the 0 to 12 months exposure tuberculosis was reported in 0 patients who received 5 mg twice daily of XELJANZ and 6 patients (05 events per 100 patient-years) who received 10 mg twice daily of XELJANZ The rate difference between XELJANZ doses (and the corresponding 95 confidence interval) was 05 (01 09) events per 100 patient-years for 10 mg twice daily XELJANZ minus 5 mg twice daily XELJANZ

Cases of disseminated tuberculosis were also reported The median XELJANZ exposure prior to diagnosis of tuberculosis was 10 months (range from 152 to 960 days) [see Warnings and Precautions (51)]

Opportunistic Infections (excluding tuberculosis) In the seven controlled trials during the 0 to 3 months exposure opportunistic infections were not reported in patients who received placebo 5 mg twice daily of XELJANZ or 10 mg twice daily of XELJANZ

In the seven controlled trials during the 0 to 12 months exposure opportunistic infections were reported in 4 patients (03 events per 100 patient-years) who received 5 mg twice daily of XELJANZ and 4 patients (03 events per 100 patient-years) who received 10 mg twice daily of XELJANZ The rate difference between XELJANZ doses (and the corresponding 95 confidence interval) was 0 (-05 05) events per 100 patient-years for 10 mg twice daily XELJANZ minus 5 mg twice daily XELJANZ

The median XELJANZ exposure prior to diagnosis of an opportunistic infection was 8 months (range from 41 to 698 days) [see Warnings and Precautions (51)]

Malignancy In the seven controlled trials during the 0 to 3 months exposure malignancies excluding NMSC were reported in 0 patients who received placebo and 2 patients (03 events per 100 patientshy

9

Reference ID 3213422

years) who received either XELJANZ 5 mg or 10 mg twice daily The rate difference between treatment groups (and the corresponding 95 confidence interval) was 03 (-01 07) events per 100 patient-years for the combined 5 mg and 10 mg twice daily XELJANZ group minus placebo

In the seven controlled trials during the 0 to 12 months exposure malignancies excluding NMSC were reported in 5 patients (04 events per 100 patient-years) who received 5 mg twice daily of XELJANZ and 7 patients (06 events per 100 patient-years) who received 10 mg twice daily of XELJANZ The rate difference between XELJANZ doses (and the corresponding 95 confidence interval) was 02 (-04 07) events per 100 patient-years for 10 mg twice daily XELJANZ minus 5 mg twice daily XELJANZ One of these malignancies was a case of lymphoma that occurred during the 0 to 12 month period in a patient treated with XELJANZ 10 mg twice daily

The most common types of malignancy including malignancies observed during the long-term extension were lung and breast cancer followed by gastric colorectal renal cell prostate cancer lymphoma and malignant melanoma [see Warnings and Precautions (52)]

Laboratory Tests

Lymphocytes In the controlled clinical trials confirmed decreases in lymphocyte counts below 500 cellsmm3

occurred in 004 of patients for the 5 mg twice daily and 10 mg twice daily XELJANZ groups combined during the first 3 months of exposure

Confirmed lymphocyte counts less than 500 cellsmm3 were associated with an increased incidence of treated and serious infections [see Warnings and Precautions (54)]

Neutrophils In the controlled clinical trials confirmed decreases in ANC below 1000 cellsmm3 occurred in 007 of patients for the 5 mg twice daily and 10 mg twice daily XELJANZ groups combined during the first 3 months of exposure

There were no confirmed decreases in ANC below 500 cellsmm3 observed in any treatment group

There was no clear relationship between neutropenia and the occurrence of serious infections

In the long-term safety population the pattern and incidence of confirmed decreases in ANC remained consistent with what was seen in the controlled clinical trials [see Warnings and Precautions (54)]

Liver Enzyme Tests Confirmed increases in liver enzymes greater than 3 times the upper limit of normal (3x ULN) were observed in patients treated with XELJANZ In patients experiencing liver enzyme elevation modification of treatment regimen such as reduction in the dose of concomitant DMARD interruption of XELJANZ or reduction in XELJANZ dose resulted in decrease or normalization of liver enzymes

In the controlled monotherapy trials (0-3 months) no differences in the incidence of ALT or AST elevations were observed between the placebo and XELJANZ 5 mg and 10 mg twice daily groups

10

Reference ID 3213422

In the controlled background DMARD trials (0-3 months) ALT elevations greater than 3x ULN were observed in 10 13 and 12 of patients receiving placebo 5 mg and 10 mg twice daily respectively In these trials AST elevations greater than 3x ULN were observed in 06 05 and 04 of patients receiving placebo 5 mg and 10 mg twice daily respectively

One case of drug-induced liver injury was reported in a patient treated with XELJANZ 10 mg twice daily for approximately 25 months The patient developed symptomatic elevations of AST and ALT greater than 3x ULN and bilirubin elevations greater than 2x ULN which required hospitalizations and a liver biopsy

Lipids In the controlled clinical trials dose-related elevations in lipid parameters (total cholesterol LDL cholesterol HDL cholesterol triglycerides) were observed at one month of exposure and remained stable thereafter Changes in lipid parameters during the first 3 months of exposure in the controlled clinical trials are summarized below

bull Mean LDL cholesterol increased by 15 in the XELJANZ 5 mg twice daily arm and 19 in the XELJANZ 10 mg twice daily arm

bull Mean HDL cholesterol increased by 10 in the XELJANZ 5 mg twice daily arm and 12 in the XELJANZ 10 mg twice daily arm

bull Mean LDLHDL ratios were essentially unchanged in XELJANZ-treated patients

In a controlled clinical trial elevations in LDL cholesterol and ApoB decreased to pretreatment levels in response to statin therapy

In the long-term safety population elevations in lipid parameters remained consistent with what was seen in the controlled clinical trials

11

Reference ID 3213422

Serum Creatinine In the controlled clinical trials dose-related elevations in serum creatinine were observed with XELJANZ treatment The mean increase in serum creatinine was lt01 mgdL in the 12-month pooled safety analysis however with increasing duration of exposure in the long-term extensions up to 2 of patients were discontinued from XELJANZ treatment due to the protocol-specified discontinuation criterion of an increase in creatinine by more than 50 of baseline The clinical significance of the observed serum creatinine elevations is unknown

Other Adverse Reactions Adverse reactions occurring in 2 or more of patients on 5 mg twice daily or 10 mg twice daily XELJANZ and at least 1 greater than that observed in patients on placebo with or without DMARD are summarized in Table 4

Table 4 Adverse Reactions Occurring in at Least 2 or More of Patients on 5 or 10 mg Twice Daily XELJANZ With or Without DMARD (0-3 months) and at Least 1 Greater Than That Observed in Patients on Placebo

XELJANZ 5 mg Twice Daily

XELJANZ 10 mg Twice Daily

Placebo

Preferred Term N = 1336

() N = 1349

() N = 809

()

Diarrhea 40 29 23

Nasopharyngitis 38 28 28

Upper respiratory tract infection 45 38 33

Headache 43 34 21

Hypertension 16 23 11

N reflects randomized and treated patients from the seven clinical trials

Other adverse reactions occurring in controlled and open-label extension studies included

Blood and lymphatic system disorders Anemia Metabolism and nutrition disorders Dehydration Psychiatric disorders Insomnia Nervous system disorders Paresthesia Respiratory thoracic and mediastinal disorders Dyspnea cough sinus congestion Gastrointestinal disorders Abdominal pain dyspepsia vomiting gastritis nausea Hepatobiliary disorders Hepatic steatosis Skin and subcutaneous tissue disorders Rash erythema pruritus Musculoskeletal connective tissue and bone disorders Musculoskeletal pain arthralgia tendonitis joint swelling General disorders and administration site conditions Pyrexia fatigue peripheral edema

12

Reference ID 3213422

7 DRUG INTERACTIONS

71 Potent CYP3A4 Inhibitors Tofacitinib exposure is increased when XELJANZ is coadministered with potent inhibitors of cytochrome P450 (CYP) 3A4 (eg ketoconazole) [see Dosage and Administration (21) and Figure 3]

72 Moderate CYP3A4 and Potent CYP2C19 Inhibitors Tofacitinib exposure is increased when XELJANZ is coadministered with medications that result in both moderate inhibition of CYP3A4 and potent inhibition of CYP2C19 (eg fluconazole) [see Dosage and Administration (21) and Figure 3]

73 Potent CYP3A4 Inducers Tofacitinib exposure is decreased when XELJANZ is coadministered with potent CYP3A4 inducers (eg rifampin) [see Dosage and Administration (21) and Figure 3]

74 Immunosuppressive Drugs There is a risk of added immunosuppression when XELJANZ is coadministered with potent immunosuppressive drugs (eg azathioprine tacrolimus cyclosporine) Combined use of multiple-dose XELJANZ with potent immunosuppressives has not been studied in rheumatoid arthritis

8 USE IN SPECIFIC POPULATIONS

81 Pregnancy Teratogenic effects Pregnancy Category C There are no adequate and well-controlled studies in pregnant women XELJANZ should be used during pregnancy only if the potential benefit justifies the potential risk to the fetus Tofacitinib has been shown to be fetocidal and teratogenic in rats and rabbits when given at exposures 146 times and 13 times respectively the maximum recommended human dose (MRHD)

In a rat embryofetal developmental study tofacitinib was teratogenic at exposure levels approximately 146 times the MRHD (on an AUC basis at oral doses of 100 mgkgday) Teratogenic effects consisted of external and soft tissue malformations of anasarca and membranous ventricular septal defects respectively and skeletal malformations or variations (absent cervical arch bent femur fibula humerus radius scapula tibia and ulna sternoschisis absent rib misshapen femur branched rib fused rib fused sternebra and hemicentric thoracic centrum) In addition there was an increase in post-implantation loss consisting of early and late resorptions resulting in a reduced number of viable fetuses Mean fetal body weight was reduced No developmental toxicity was observed in rats at exposure levels approximately 58 times the MRHD (on an AUC basis at oral doses of 30 mgkgday) In the rabbit embryofetal developmental study tofacitinib was teratogenic at exposure levels approximately 13 times the MRHD (on an AUC basis at oral doses of 30 mgkgday) in the absence of signs of maternal toxicity Teratogenic effects included thoracogastroschisis omphalocele membranous ventricular septal defects and cranialskeletal malformations (microstomia microphthalmia)

13

Reference ID 3213422

mid-line and tail defects In addition there was an increase in post-implantation loss associated with late resorptions No developmental toxicity was observed in rabbits at exposure levels approximately 3 times the MRHD (on an AUC basis at oral doses of 10 mgkgday)

Nonteratogenic effects In a peri- and postnatal rat study there were reductions in live litter size postnatal survival and pup body weights at exposure levels approximately 73 times the MRHD (on an AUC basis at oral doses of 50 mgkgday) There was no effect on behavioral and learning assessments sexual maturation or the ability of the F1 generation rats to mate and produce viable F2 generation fetuses in rats at exposure levels approximately 17 times the MRHD (on an AUC basis at oral doses of 10 mgkgday)

Pregnancy Registry To monitor the outcomes of pregnant women exposed to XELJANZ a pregnancy registry has been established Physicians are encouraged to register patients and pregnant women are encouraged to register themselves by calling 1-877-311-8972

83 Nursing Mothers Tofacitinib was secreted in milk of lactating rats It is not known whether tofacitinib is excreted in human milk Because many drugs are excreted in human milk and because of the potential for serious adverse reactions in nursing infants from tofacitinib a decision should be made whether to discontinue nursing or to discontinue the drug taking into account the importance of the drug for the mother

84 Pediatric Use The safety and effectiveness of XELJANZ in pediatric patients have not been established

85 Geriatric Use Of the 3315 patients who enrolled in Studies I to V a total of 505 rheumatoid arthritis patients were 65 years of age and older including 71 patients 75 years and older The frequency of serious infection among XELJANZ-treated subjects 65 years of age and older was higher than among those under the age of 65 As there is a higher incidence of infections in the elderly population in general caution should be used when treating the elderly

86 Hepatic Impairment No dose adjustment is required in patients with mild hepatic impairment XELJANZ dose should be reduced to 5 mg once daily in patients with moderate hepatic impairment The safety and efficacy of XELJANZ have not been studied in patients with severe hepatic impairment or in patients with positive hepatitis B virus or hepatitis C virus serology [see Dosage and Administration (21) and Warnings and Precautions (56)]

87 Renal Impairment No dose adjustment is required in patients with mild renal impairment XELJANZ dose should be reduced to 5 mg once daily in patients with moderate and severe renal impairment [see Dosage and Administration (21)] In clinical trials XELJANZ was not evaluated in rheumatoid arthritis patients with baseline creatinine clearance values (estimated by the Cockroft-Gault equation) less than 40 mLmin

14

Reference ID 3213422

10 OVERDOSAGE Signs Symptoms and Laboratory Findings of Acute Overdosage in Humans There is no experience with overdose of XELJANZ

Treatment or Management of Overdose Pharmacokinetic data up to and including a single dose of 100 mg in healthy volunteers indicate that more than 95 of the administered dose is expected to be eliminated within 24 hours

There is no specific antidote for overdose with XELJANZ In case of an overdose it is recommended that the patient be monitored for signs and symptoms of adverse reactions Patients who develop adverse reactions should receive appropriate treatment

11 DESCRIPTION XELJANZ is the citrate salt of tofacitinib a JAK inhibitor

Tofacitinib citrate is a white to off-white powder with the following chemical name (3R4R)-4shymethyl-3-(methyl-7H-pyrrolo [23-d]pyrimidin-4-ylamino)-szlig-oxo-1-piperidinepropanenitrile 2shyhydroxy-123-propanetricarboxylate (11) It is freely soluble in water

Tofacitinib citrate has a molecular weight of 5045 Daltons (or 3124 Daltons as the tofacitinib free base) and a molecular formula of C16H20N6ObullC6H8O7 The chemical structure of tofacitinib citrate is

NN

Me

Me

N

N N H

O N

HO2C CO2H

HO2C

OH bull

XELJANZ is supplied for oral administration as 5 mg tofacitinib (equivalent to 8 mg tofacitinib citrate) white round immediate-release film-coated tablet Each tablet of XELJANZ contains the appropriate amount of XELJANZ as a citrate salt and the following inactive ingredients microcrystalline cellulose lactose monohydrate croscarmellose sodium magnesium stearate HPMC 2910Hypromellose 6cP titanium dioxide macrogolPEG3350 and triacetin

12 CLINICAL PHARMACOLOGY

121 Mechanism of Action Tofacitinib is a Janus kinase (JAK) inhibitor JAKs are intracellular enzymes which transmit signals arising from cytokine or growth factor-receptor interactions on the cellular membrane to influence cellular processes of hematopoiesis and immune cell function Within the signaling pathway JAKs phosphorylate and activate Signal Transducers and Activators of Transcription (STATs) which modulate intracellular activity including gene expression Tofacitinib modulates

15

Reference ID 3213422

the signaling pathway at the point of JAKs preventing the phosphorylation and activation of STATs JAK enzymes transmit cytokine signaling through pairing of JAKs (eg JAK1JAK3 JAK1JAK2 JAK1TyK2 JAK2JAK2) Tofacitinib inhibited the in vitro activities of JAK1JAK2 JAK1JAK3 and JAK2JAK2 combinations with IC50 of 406 56 and 1377 nM respectively However the relevance of specific JAK combinations to therapeutic effectiveness is not known

122 Pharmacodynamics Treatment with XELJANZ was associated with dose-dependent reductions of circulating CD1656+ natural killer cells with estimated maximum reductions occurring at approximately 8shy10 weeks after initiation of therapy These changes generally resolved within 2-6 weeks after discontinuation of treatment Treatment with XELJANZ was associated with dose-dependent increases in B cell counts Changes in circulating T-lymphocyte counts and T-lymphocyte subsets (CD3+ CD4+ and CD8+) were small and inconsistent The clinical significance of these changes is unknown

Total serum IgG IgM and IgA levels after 6-month dosing in patients with rheumatoid arthritis were lower than placebo however changes were small and not dose-dependent

After treatment with XELJANZ in patients with rheumatoid arthritis rapid decreases in serum C-reactive protein (CRP) were observed and maintained throughout dosing Changes in CRP observed with XELJANZ treatment do not reverse fully within 2 weeks after discontinuation indicating a longer duration of pharmacodynamic activity compared to the pharmacokinetic half-life

123 Pharmacokinetics Following oral administration of XELJANZ peak plasma concentrations are reached within 05shy1 hour elimination half-life is ~3 hours and a dose-proportional increase in systemic exposure was observed in the therapeutic dose range Steady state concentrations are achieved in 24-48 hours with negligible accumulation after twice daily administration

Absorption The absolute oral bioavailability of tofacitinib is 74 Coadministration of XELJANZ with a high-fat meal resulted in no changes in AUC while Cmax was reduced by 32 In clinical trials XELJANZ was administered without regard to meals

Distribution After intravenous administration the volume of distribution is 87 L The protein binding of tofacitinib is ~40 Tofacitinib binds predominantly to albumin and does not appear to bind to 1-acid glycoprotein Tofacitinib distributes equally between red blood cells and plasma

Metabolism and Elimination Clearance mechanisms for tofacitinib are approximately 70 hepatic metabolism and 30 renal excretion of the parent drug The metabolism of tofacitinib is primarily mediated by CYP3A4 with minor contribution from CYP2C19 In a human radiolabeled study more than 65 of the total circulating radioactivity was accounted for by unchanged tofacitinib with the remaining

16

Reference ID 3213422

35 attributed to 8 metabolites each accounting for less than 8 of total radioactivity The pharmacologic activity of tofacitinib is attributed to the parent molecule

Pharmacokinetics in Rheumatoid Arthritis Patients Population PK analysis in rheumatoid arthritis patients indicated no clinically relevant change in tofacitinib exposure after accounting for differences in renal function (ie creatinine clearance) between patients based on age weight gender and race (Figure 1) An approximately linear relationship between body weight and volume of distribution was observed resulting in higher peak (Cmax) and lower trough (Cmin) concentrations in lighter patients However this difference is not considered to be clinically relevant The between-subject variability ( coefficient of variation) in AUC of tofacitinib is estimated to be approximately 27

Specific Populations The effect of renal and hepatic impairment and other intrinsic factors on the pharmacokinetics of tofacitinib is shown in Figure 1

17

Reference ID 3213422

Figure 1 Impact of Intrinsic Factors on Tofacitinib Pharmacokinetics

Intrinsic Factor

Weight = 40 kg

Weight = 140 kg

Age = 80 years

Female

Asian

Black

Hispanic

Renal Impairment (Mild)

Renal Impairment (Moderate)

Renal Impairment (Severe)

Hepatic Impairment (Mild)

Hepatic Impairment (Moderate)

PK

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

0

Ratio and 90 CI Recommendation

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

Reduce Dose to 5 mg Once Daily

Reduce Dose to 5 mg Once Daily

No Dose Adjustment

Reduce Dose to 5 mg Once Daily

05 1 15 2 25 3 35 4

Ratio relative to reference

Supplemental doses are not necessary in patients after dialysis

Reference values for weight age gender and race comparisons are 70 kg 55 years male and White respectively Reference groups for renal and hepatic impairment data are subjects with normal renal and hepatic function

Drug Interactions

Potential for XELJANZ to Influence the PK of Other Drugs In vitro studies indicate that tofacitinib does not significantly inhibit or induce the activity of the

18

Reference ID 3213422

major human drug-metabolizing CYPs (CYP1A2 CYP2B6 CYP2C8 CYP2C9 CYP2C19 CYP2D6 and CYP3A4) at concentrations exceeding 185 times the steady state Cmax of a 5 mg twice daily dose These in vitro results were confirmed by a human drug interaction study showing no changes in the PK of midazolam a highly sensitive CYP3A4 substrate when coadministered with XELJANZ

In rheumatoid arthritis patients the oral clearance of tofacitinib does not vary with time indicating that tofacitinib does not normalize CYP enzyme activity in rheumatoid arthritis patients Therefore coadministration with XELJANZ is not expected to result in clinically relevant increases in the metabolism of CYP substrates in rheumatoid arthritis patients

In vitro data indicate that the potential for tofacitinib to inhibit transporters such as Pshyglycoprotein organic anionic or cationic transporters at therapeutic concentrations is low

Dosing recommendations for coadministered drugs following administration with XELJANZ are shown in Figure 2

Figure 2 Impact of XELJANZ on PK of Other Drugs

Coadministered PK Drug

Methotrexate AUC

Cmax

CYP3A Substrate AUC Midazolam

Cmax

Oral ContraceptivesLevonorgestrel

AUC

Cmax

Ethinyl Estradiol AUC

Cmax

OCT amp MATE Substrate AUC Metformin

Cmax

Ratio and 90 CI Recommendation

No Dose Adjustment

No dose adjustment for CYP3A substrates such as midazolam

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

0 025 05 075 1 125 15 175 2

Ratio relative to reference

Note Reference group is administration of concomitant medication alone OCT = Organic Cationic Transporter MATE = Multidrug and Toxic Compound Extrusion

Potential for Other Drugs to Influence the PK of Tofacitinib Since tofacitinib is metabolized by CYP3A4 interaction with drugs that inhibit or induce CYP3A4 is likely Inhibitors of CYP2C19 alone or P-glycoprotein are unlikely to substantially alter the PK of tofacitinib Dosing recommendations for XELJANZ for administration with CYP inhibitors or inducers are shown in Figure 3

19

Reference ID 3213422

Figure 3 Impact of Other Drugs on PK of XELJANZ

Coadministered PK Drug

CYP3A Inhib itor AUC Ketoconazole

Cmax

CYP3A amp CYP2C19 Inhib itor AUC

Cmax Fluconazole

CYP Inducer Rifampin AUC

Cmax

Methotrexate AUC

Cmax

Tacrolimus AUC Cmax

Cyclosporine AUC

Cmax

Ratio and 90 CI Recommendation

Reduce XELJANZ Dose to 5 mg Once Daily

Reduce XELJANZ Dose to 5 mg Once Daily

May Decrease Efficacy

No Dose Adjustment

There is a risk of added immunosuppressionif XELJANZ is taken with Tacrolimus

There is a risk of added immunosuppressionif XELJANZ is taken with Cyclosporine

0 05 1 15 2 25

Ratio relative to reference

Note Reference group is administration of tofacitinib alone

13 NONCLINICAL TOXICOLOGY

131 Carcinogenesis Mutagenesis Impairment of Fertility In a 39-week toxicology study in monkeys tofacitinib at exposure levels approximately 6 times the MRHD (on an AUC basis at oral doses of 5 mgkg twice daily) produced lymphomas No lymphomas were observed in this study at exposure levels 1 times the MRHD (on an AUC basis at oral doses of 1 mgkg twice daily)

The carcinogenic potential of tofacitinib was assessed in 6-month rasH2 transgenic mouse carcinogenicity and 2-year rat carcinogenicity studies Tofacitinib at exposure levels approximately 34 times the MRHD (on an AUC basis at oral doses of 200 mgkgday) was not carcinogenic in mice

In the 24-month oral carcinogenicity study in Sprague-Dawley rats tofacitinib caused benign Leydig cell tumors hibernomas (malignancy of brown adipose tissue) and benign thymomas at doses greater than or equal to 30 mgkgday (approximately 42 times the exposure levels at the MRHD on an AUC basis) The relevance of benign Leydig cell tumors to human risk is not known

20

Reference ID 3213422

Tofacitinib was not mutagenic in the bacterial reverse mutation assay It was positive for clastogenicity in the in vitro chromosome aberration assay with human lymphocytes in the presence of metabolic enzymes but negative in the absence of metabolic enzymes Tofacitinib was negative in the in vivo rat micronucleus assay and in the in vitro CHO-HGPRT assay and the in vivo rat hepatocyte unscheduled DNA synthesis assay

In rats tofacitinib at exposure levels approximately 17 times the MRHD (on an AUC basis at oral doses of 10 mgkgday) reduced female fertility due to increased post-implantation loss There was no impairment of female rat fertility at exposure levels of tofacitinib equal to the MRHD (on an AUC basis at oral doses of 1 mgkgday) Tofacitinib exposure levels at approximately 133 times the MRHD (on an AUC basis at oral doses of 100 mgkgday) had no effect on male fertility sperm motility or sperm concentration

14 CLINICAL STUDIES The XELJANZ clinical development program included two dose-ranging trials and five confirmatory trials

DOSE-RANGING TRIALS Dose selection for XELJANZ was based on two pivotal dose-ranging trials

Dose-Ranging Study 1 was a 6-month monotherapy trial in 384 patients with active rheumatoid arthritis who had an inadequate response to a DMARD Patients who previously received adalimumab therapy were excluded Patients were randomized to 1 of 7 monotherapy treatments XELJANZ 1 3 5 10 or 15 mg twice daily adalimumab 40 mg subcutaneously every other week for 10 weeks followed by XELJANZ 5 mg twice daily for 3 months or placebo

Dose-Ranging Study 2 was a 6-month trial in which 507 patients with active rheumatoid arthritis who had an inadequate response to MTX alone received one of 6 dose regimens of XELJANZ (20 mg once daily 1 3 5 10 or 15 mg twice daily) or placebo added to background MTX

The results of XELJANZ-treated patients achieving ACR20 responses in Studies 1 and 2 are shown in Figure 4 Although a dose-response relationship was observed in Study 1 the proportion of patients with an ACR20 response did not clearly differ between the 10 mg and 15 mg doses Furthermore there was a smaller proportion of patients who responded to adalimumab monotherapy compared to those treated with XELJANZ doses 3 mg twice daily and greater In Study 2 a smaller proportion of patients achieved an ACR20 response in the placebo and XELJANZ 1 mg groups compared to patients treated with the other XELJANZ doses However there was no difference in the proportion of responders among patients treated with XELJANZ 3 5 10 15 mg twice daily or 20 mg once daily doses

21

Reference ID 3213422

Figure 4 Proportion of Patients with ACR20 Response at Month 3 in Dose-Ranging Studies 1 and 2

CONFIRMATORY TRIALS Study I was a 6-month monotherapy trial in which 610 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to a DMARD (nonbiologic or biologic) received XELJANZ 5 or 10 mg twice daily or placebo At the Month 3 visit all patients randomized to placebo treatment were advanced in a blinded fashion to a second predetermined treatment of XELJANZ 5 or 10 mg twice daily The primary endpoints at Month 3 were the proportion of patients who achieved an ACR20 response changes in Health Assessment Questionnaire ndash Disability Index (HAQ-DI) and rates of Disease Activity Score DAS28-4(ESR) less than 26

Study II was a 12-month trial in which 792 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to a nonbiologic DMARD received XELJANZ 5 or 10 mg twice daily or placebo added to background DMARD treatment (excluding potent immunosuppressive treatments such as azathioprine or cyclosporine) At the Month 3 visit nonresponding patients were advanced in a blinded fashion to a second predetermined treatment of XELJANZ 5 or 10 mg twice daily At the end of Month 6 all placebo patients were advanced to their second predetermined treatment in a blinded fashion The primary endpoints were the proportion of patients who achieved an ACR20 response at Month 6 changes in HAQ-DI at Month 3 and rates of DAS28-4(ESR) less than 26 at Month 6

Study III was a 12-month trial in 717 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to MTX Patients received XELJANZ 5 or 10 mg twice daily adalimumab 40 mg subcutaneously every other week or placebo added to background MTX

22

Reference ID 3213422

Placebo patients were advanced as in Study II The primary endpoints were the proportion of patients who achieved an ACR20 response at Month 6 HAQ-DI at Month 3 and DAS28-4(ESR) less than 26 at Month 6

Study IV is an ongoing 2-year trial with a planned analysis at 1 year in which 797 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to MTX received XELJANZ 5 or 10 mg twice daily or placebo added to background MTX Placebo patients were advanced as in Study II The primary endpoints were the proportion of patients who achieved an ACR20 response at Month 6 mean change from baseline in van der Heijde-modified total Sharp Score (mTSS) at Month 6 HAQ-DI at Month 3 and DAS28-4(ESR) less than 26 at Month 6

Study V was a 6-month trial in which 399 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to at least one approved TNF-inhibiting biologic agent received XELJANZ 5 or 10 mg twice daily or placebo added to background MTX At the Month 3 visit all patients randomized to placebo treatment were advanced in a blinded fashion to a second predetermined treatment of XELJANZ 5 or 10 mg twice daily The primary endpoints at Month 3 were the proportion of patients who achieved an ACR20 response HAQ-DI and DAS28-4(ESR) less than 26

Clinical Response The percentages of XELJANZ-treated patients achieving ACR20 ACR50 and ACR70 responses in Studies I IV and V are shown in Table 5 Similar results were observed with Studies II and III In all trials patients treated with either 5 or 10 mg twice daily XELJANZ had higher ACR20 ACR50 and ACR70 response rates versus placebo with or without background DMARD treatment at Month 3 and Month 6 Higher ACR20 response rates were observed within 2 weeks compared to placebo In the 12-month trials ACR response rates in XELJANZ-treated patients were consistent at 6 and 12 months

23

Reference ID 3213422

Table 5 Proportion of Patients with an ACR Response Percent of Patients

Monotherapy in Nonbiologic or Biologic DMARD Inadequate

Respondersc

MTX Inadequate Respondersd TNF Inhibitor Inadequate Responderse

Study I Study IV Study V

Na PBO

122

XELJANZ 5 mg Twice

Daily

243

XELJANZ 10 mg Twice Daily

245

PBO + MTX

160

XELJANZ 5 mg Twice

Daily + MTX

321

XELJANZ 10 mg Twice

Daily + MTX

316

PBO +

MTX

132

XELJANZ 5 mg Twice

Daily + MTX

133

XELJANZ 10 mg Twice

Daily + MTX

134 ACR20 Month 3 Month 6

26 NAb

59 69

65 70

27 25

55 50

67 62

24 NA

41 51

48 54

ACR50 Month 3 Month 6

12 NA

31 42

36 46

8 9

29 32

37 44

8 NA

26 37

28 30

ACR70 Month 3 Month 6

6 NA

15 22

20 29

3 1

11 14

17 23

2 NA

14 16

10 16

a N is number of randomized and treated patients b NA Not applicable as data for placebo treatment is not available beyond 3 months in Studies I and V due to placebo advancement c Inadequate response to at least one DMARD (biologic or nonbiologic) due to lack of efficacy or toxicity d Inadequate response to MTX defined as the presence of sufficient residual disease activity to meet the entry criteria e Inadequate response to a least one TNF inhibitor due to lack of efficacy andor intolerance

In Study IV a greater proportion of patients treated with XELJANZ 5 mg or 10 mg twice daily plus MTX achieved a low level of disease activity as measured by a DAS28-4(ESR) less than 26 at 6 months compared to those treated with MTX alone (Table 6)

24

Reference ID 3213422

Table 6 Proportion of Patients with DAS28-4(ESR) Less Than 26 with Number of Residual Active Joints Study IV DAS28-4(ESR) Less Than 26 Placebo + MTX

160

XELJANZ 5 mg Twice Daily + MTX

321

XELJANZ 10 mg Twice Daily + MTX

316 Proportion of responders at Month 6 (n) 1 (2) 6 (19) 13 (42)

Of responders proportion with 0 active joints (n)

50 (1) 42 (8) 36 (15)

Of responders proportion with 1 active joint (n) 0 5 (1) 17 (7) Of responders proportion with 2 active joints (n)

0 32 (6) 7 (3)

Of responders proportion with 3 or more active joints (n)

50 (1) 21 (4) 40 (17)

The results of the components of the ACR response criteria for Study IV are shown in Table 7 Similar results were observed in Studies I II III and V

Table 7 Components of ACR Response at 3 Months Study IV

XELJANZ

5 mg

Twice Daily + MTX

N=321

XELJANZ

10 mg

Twice Daily + MTX

N=316

Placebo + MTX

N=160

Component (mean) a Baseline Month 3a Baseline Month 3a Baseline Month 3a

Number of tender

joints 24 13 23 10 23 18

(0-68) (14) (14) (15) (12) (13) (14)

Number of swollen

joints 14 6 14 6 14 10

(0-66) (8) (8) (8) (7) (9) (9)

Painb 58

(23)

34

(23)

58

(24)

29

(22)

55

(24)

47

(24)

Patient global

assessmentb

58

(24)

35

(23)

57

(23)

29

(20)

54

(23)

47

(24)

Disability index

(HAQ-DI)c 141 099 140 084 132 119

(068) (065) (066) (064) (067) (068)

25

Reference ID 3213422

Physician global

assessmentb 59 30 58 24 56 43

(16) (19) (17) (17) (18) (22)

CRP (mgL) 153 71 171 44 137 146

(190) (191) (269) (86) (149) (187) aData shown is mean (Standard Deviation) at Month 3bVisual analog scale 0 = best 100 = worst cHealth Assessment Questionnaire Disability Index 0 = best 3 = worst 20 questions categories dressing and grooming arising eating walking hygiene reach grip and activities

The percent of ACR20 responders by visit for Study IV is shown in Figure 5 Similar responses were observed in Studies I II III and V

Figure 5 Percentage of ACR20 Responders by Visit for Study IV

Physical Function Response Improvement in physical functioning was measured by the HAQ-DI Patients receiving XELJANZ 5 and 10 mg twice daily demonstrated greater improvement from baseline in physical functioning compared to placebo at Month 3

The mean (95 CI) difference from placebo in HAQ-DI improvement from baseline at Month 3 in Study III was -022 (-035 -010) in patients receiving 5 mg XELJANZ twice daily and -032 (-044 -019) in patients receiving 10 mg XELJANZ twice daily Similar results were obtained in

26

Reference ID 3213422

Studies I II IV and V In the 12-month trials HAQ-DI results in XELJANZ-treated patients were consistent at 6 and 12 months

16 HOW SUPPLIEDSTORAGE AND HANDLING XELJANZ is provided as 5 mg tofacitinib (equivalent to 8 mg tofacitinib citrate) tablets White round immediate-release film-coated tablets debossed with ldquoPfizerrdquo on one side and ldquoJKI 5rdquo on the other side and available in

Bottles of 60 NDC 0069-1001-01 Bottles of 180 NDC 0069-1001-02

Storage and Handling Store at 20degC to 25degC (68degF to 77degF) [See USP Controlled Room Temperature]

Do not repackage

17 PATIENT COUNSELING INFORMATION See FDA-approved patient labeling (Medication Guide)

Inform patients of the availability of a Medication Guide and instruct them to read the Medication Guide prior to taking XELJANZ Instruct patients to take XELJANZ only as prescribed

This productrsquos label may have been updated For current full prescribing information please visit wwwpfizercom

LAB-0445-10

27

Reference ID 3213422

MEDICATION GUIDE

XELJANZ (ZELrsquo JANSrsquo) (tofacitinib)

Read this Medication Guide before you start taking XELJANZ and each time you get a refill There may be new information This Medication Guide does not take the place of talking to your healthcare provider about your medical condition or treatment

What is the most important information I should know about XELJANZ XELJANZ may cause serious side effects including

1 Serious infections

XELJANZ is a medicine that affects your immune system XELJANZ can lower the ability of your immune system to fight infections Some people have serious infections while taking XELJANZ including tuberculosis (TB) and infections caused by bacteria fungi or viruses that can spread throughout the body Some people have died from these infections Your healthcare provider should test you for TB before starting XELJANZ Your healthcare provider should monitor you closely for signs and symptoms of

TB infection during treatment with XELJANZ

You should not start taking XELJANZ if you have any kind of infection unless your healthcare provider tells you it is okay

Before starting XELJANZ tell your healthcare provider if you think you have an infection or have symptoms of an infection such as

o fever sweating or chills o warm red or painful skin o muscle aches or sores on your body o cough o diarrhea or stomach pain o shortness of breath o burning when you urinate o blood in phlegm or urinating more often o weight loss than normal

o feeling very tired are being treated for an infection get a lot of infections or have infections that keep coming back have diabetes HIV or a weak immune system People with these conditions

have a higher chance for infections have TB or have been in close contact with someone with TB live or have lived or have traveled to certain parts of the country (such as the

Ohio and Mississippi River valleys and the Southwest) where there is an increased chance for getting certain kinds of fungal infections (histoplasmosis coccidioidomycosis or blastomycosis) These infections may happen or become more severe if you use XELJANZ Ask your healthcare provider if you do not know if you have lived in an area where these infections are common

have or have had hepatitis B or C

28

Reference ID 3213422

After starting XELJANZ call your healthcare provider right away if you have any symptoms of an infection XELJANZ can make you more likely to get infections or make worse any infection that you have

2 Cancer and immune system problems

XELJANZ may increase your risk of certain cancers by changing the way your immune system works

Lymphoma and other cancers can happen in patients taking XELJANZ Tell your healthcare provider if you have ever had any type of cancer

Some people who have taken XELJANZ with certain other medicines to prevent kidney transplant rejection have had a problem with certain white blood cells growing out of control (Epstein Barr Virus-associated post transplant lymphoproliferative disorder)

3 Tears (perforation) in the stomach or intestines

Tell your healthcare provider if you have had diverticulitis (inflammation in parts of the large intestine) or ulcers in your stomach or intestines Some people taking XELJANZ get tears in their stomach or intestine This happens most often in people who also take nonsteroidal anti-inflammatory drugs (NSAIDs) corticosteroids or methotrexate

Tell your healthcare provider right away if you have fever and stomach-area pain that does not go away and a change in your bowel habits

4 Changes in certain laboratory test results Your healthcare provider should do blood tests before you start receiving XELJANZ and while you take XELJANZ to check for the following side effects

changes in lymphocyte counts Lymphocytes are white blood cells that help the body fight off infections

low neutrophil counts Neutrophils are white blood cells that help the body fight off infections

low red blood cell count This may mean that you have anemia which may make you feel weak and tired

Your healthcare provider should routinely check certain liver tests

You should not receive XELJANZ if your lymphocyte count neutrophil count or red blood cell count is too low or your liver tests are too high

Your healthcare provider may stop your XELJANZ treatment for a period of time if needed because of changes in these blood test results

29

Reference ID 3213422

You may also have changes in other laboratory tests such as your blood cholesterol levels Your healthcare provider should do blood tests to check your cholesterol levels 4 to 8 weeks after you start receiving XELJANZ and as needed after that Normal cholesterol levels are important to good heart health

See ldquoWhat are the possible side effects of XELJANZrdquo for more information about side effects

What is XELJANZ

XELJANZ is a prescription medicine called a Janus kinase (JAK) inhibitor XELJANZ is used to treat adults with moderately to severely active rheumatoid arthritis in which methotrexate did not work well

It is not known if XELJANZ is safe and effective in people with Hepatitis B or C

XELJANZ is not for people with severe liver problems

It is not known if XELJANZ is safe and effective in children

What should I tell my healthcare provider before taking XELJANZ

XELJANZ may not be right for you Before taking XELJANZ tell your healthcare provider if you have an infection See ldquoWhat is the most important information I should know

about XELJANZrdquo have liver problems have kidney problems have any stomach area (abdominal) pain or been diagnosed with diverticulitis or

ulcers in your stomach or intestines have had a reaction to tofacitinib or any of the ingredients in XELJANZ have recently received or are scheduled to receive a vaccine People who take

XELJANZ should not receive live vaccines People taking XELJANZ can receive non-live vaccines

have any other medical conditions plan to become pregnant or are pregnant It is not known if XELJANZ will harm

an unborn baby

Pregnancy Registry Pfizer has a registry for pregnant women who take XELJANZ The purpose of this registry is to check the health of the pregnant mother and her baby If you are pregnant or become pregnant while taking XELJANZ talk to your healthcare provider about how you can join this pregnancy registry or you may contact the registry at 1-877-311-8972 to enroll

plan to breastfeed or are breastfeeding You and your healthcare provider should decide if you will take XELJANZ or breastfeed You should not do both

30

Reference ID 3213422

Tell your healthcare provider about all the medicines you take including prescription and non-prescription medicines vitamins and herbal supplements XELJANZ and other medicines may affect each other causing side effects

Especially tell your healthcare provider if you take any other medicines to treat your rheumatoid arthritis You should not take

tocilizumab (Actemrareg) etanercept (Enbrelreg) adalimumab (Humirareg) infliximab (Remicadereg) rituximab (Rituxanreg) abatacept (Orenciareg) anakinra (Kineretreg) certolizumab (Cimziareg) golimumab (Simponireg) azathioprine cyclosporine or other immunosuppressive drugs while you are taking XELJANZ Taking XELJANZ with these medicines may increase your risk of infection

medicines that affect the way certain liver enzymes work Ask your healthcare provider if you are not sure if your medicine is one of these

Know the medicines you take Keep a list of them to show your healthcare provider and pharmacist when you get a new medicine

How should I take XELJANZ

Take XELJANZ as your healthcare provider tells you to take it

Take XELJANZ 2 times a day with or without food

If you take too much XELJANZ call your healthcare provider or go the nearest hospital emergency room right away

What are possible side effects of XELJANZ

XELJANZ may cause serious side effects including

See ldquoWhat is the most important information I should know about XELJANZrdquo

Hepatitis B or C activation infection in people who carry the virus in their blood If you are a carrier of the hepatitis B or C virus (viruses that affect the liver) the virus may become active while you use XELJANZ Your healthcare provider may do blood tests before you start treatment with XELJANZ and while you are using XELJANZ Tell your healthcare provider if you have any of the following symptoms of a possible hepatitis B or C infection

o feel very tired o fevers o skin or eyes look yellow o chills o little or no appetite o stomach discomfort o vomiting o muscle aches o clay-colored bowel o dark urine

movements o skin rash

31

Reference ID 3213422

Common side effects of XELJANZ include upper respiratory tract infections (common cold sinus infections) headache diarrhea nasal congestion sore throat and runny nose (nasopharyngitis)

Tell your healthcare provider if you have any side effect that bothers you or that does not go away

These are not all the possible side effects of XELJANZ For more information ask your healthcare provider or pharmacist

Call your doctor for medical advice about side effects You may report side effects to FDA at 1-800-FDA-1088

You may also report side effects to Pfizer at 1-800-438-1985

How should I store XELJANZ

Store XELJANZ at 68degF to 77degF (room temperature)

Safely throw away medicine that is out of date or no longer needed

Keep XELJANZ and all medicines out of the reach of children

General information about the safe and effective use of XELJANZ

Medicines are sometimes prescribed for purposes other than those listed in a Medication Guide Do not use XELJANZ for a condition for which it was not prescribed Do not give XELJANZ to other people even if they have the same symptoms you have It may harm them

This Medication Guide summarizes the most important information about XELJANZ If you would like more information talk to your healthcare provider You can ask your pharmacist or healthcare provider for information about XELJANZ that is written for health professionals

What are the ingredients in XELJANZ

Active ingredient tofacitinib citrate

Inactive ingredients microcrystalline cellulose lactose monohydrate croscarmellose sodium magnesium stearate HPMC 2910Hypromellose 6cP titanium dioxide macrogolPEG3350 and triacetin

32

Reference ID 3213422

This Medication Guide has been approved by the US Food and Drug Administration

LAB-0535-10 Issued November 2012

33

Reference ID 3213422

Monitor neutrophil counts at baseline and after 4-8 weeks of treatment and every 3 months thereafter For recommended modifications based on ANC results see Dosage and Administration (23)

Hemoglobin Avoid initiation of XELJANZ treatment in patients with a low hemoglobin level (ie less than 9 gdL) Treatment with XELJANZ should be interrupted in patients who develop hemoglobin levels less than 8 gdL or whose hemoglobin level drops greater than 2 gdL on treatment

Monitor hemoglobin at baseline and after 4-8 weeks of treatment and every 3 months thereafter For recommended modifications based on hemoglobin results see Dosage and Administration (23)

Liver Enzymes Treatment with XELJANZ was associated with an increased incidence of liver enzyme elevation compared to placebo Most of these abnormalities occurred in studies with background DMARD (primarily methotrexate) therapy

Routine monitoring of liver tests and prompt investigation of the causes of liver enzyme elevations is recommended to identify potential cases of drug-induced liver injury If drug-induced liver injury is suspected the administration of XELJANZ should be interrupted until this diagnosis has been excluded

Lipids Treatment with XELJANZ was associated with increases in lipid parameters including total cholesterol low-density lipoprotein (LDL) cholesterol and high-density lipoprotein (HDL) cholesterol Maximum effects were generally observed within 6 weeks The effect of these lipid parameter elevations on cardiovascular morbidity and mortality has not been determined

Assessment of lipid parameters should be performed approximately 4-8 weeks following initiation of XELJANZ therapy

Manage patients according to clinical guidelines [eg National Cholesterol Educational Program (NCEP)] for the management of hyperlipidemia

55 Vaccinations No data are available on the response to vaccination or on the secondary transmission of infection by live vaccines to patients receiving XELJANZ Live vaccines should not be given concurrently with XELJANZ

Update immunizations in agreement with current immunization guidelines prior to initiating XELJANZ therapy

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Reference ID 3213422

56 Hepatic Impairment Treatment with XELJANZ is not recommended in patients with severe hepatic impairment [see Adverse Reactions (61) and Use in Specific Populations (86)]

6 ADVERSE REACTIONS Because clinical studies are conducted under widely varying conditions adverse reaction rates observed in the clinical studies of a drug cannot be directly compared to rates in the clinical studies of another drug and may not predict the rates observed in a broader patient population in clinical practice

The following data includes two Phase 2 and five Phase 3 double-blind controlled multicenter trials In these trials patients were randomized to doses of XELJANZ 5 mg twice daily (292 patients) and 10 mg twice daily (306 patients) monotherapy XELJANZ 5 mg twice daily (1044 patients) and 10 mg twice daily (1043 patients) in combination with DMARDs (including methotrexate) and placebo (809 patients) All seven protocols included provisions for patients taking placebo to receive treatment with XELJANZ at Month 3 or Month 6 either by patient response (based on uncontrolled disease activity) or by design so that adverse events cannot always be unambiguously attributed to a given treatment Therefore some analyses that follow include patients who changed treatment by design or by patient response from placebo to XELJANZ in both the placebo and XELJANZ group of a given interval Comparisons between placebo and XELJANZ were based on the first 3 months of exposure and comparisons between XELJANZ 5 mg twice daily and XELJANZ 10 mg twice daily were based on the first 12 months of exposure

The long-term safety population includes all patients who participated in a double-blind controlled trial (including earlier development phase studies) and then participated in one of two long-term safety studies The design of the long-term safety studies allowed for modification of XELJANZ doses according to clinical judgment This limits the interpretation of the long-term safety data with respect to dose

61 Clinical Trial Experience The most common serious adverse reactions were serious infections [see Warnings and Precautions (51)]

The proportion of patients who discontinued treatment due to any adverse reaction during the 0 to 3 months exposure in the double-blind placebo-controlled trials was 4 for patients taking XELJANZ and 3 for placebo-treated patients

Overall Infections

In the seven controlled trials during the 0 to 3 months exposure the overall frequency of infections was 20 and 22 in the 5 mg twice daily and 10 mg twice daily groups respectively and 18 in the placebo group

The most commonly reported infections with XELJANZ were upper respiratory tract infections nasopharyngitis and urinary tract infections (4 3 and 2 of patients respectively)

8

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Serious Infections In the seven controlled trials during the 0 to 3 months exposure serious infections were reported in 1 patient (05 events per 100 patient-years) who received placebo and 11 patients (17 events per 100 patient-years) who received XELJANZ 5 mg or 10 mg twice daily The rate difference between treatment groups (and the corresponding 95 confidence interval) was 11 (-04 25) events per 100 patient-years for the combined 5 mg twice daily and 10 mg twice daily XELJANZ group minus placebo

In the seven controlled trials during the 0 to 12 months exposure serious infections were reported in 34 patients (27 events per 100 patient-years) who received 5 mg twice daily of XELJANZ and 33 patients (27 events per 100 patient-years) who received 10 mg twice daily of XELJANZ The rate difference between XELJANZ doses (and the corresponding 95 confidence interval) was -01 (-13 12) events per 100 patient-years for 10 mg twice daily XELJANZ minus 5 mg twice daily XELJANZ

The most common serious infections included pneumonia cellulitis herpes zoster and urinary tract infection [see Warnings and Precautions (51)]

Tuberculosis In the seven controlled trials during the 0 to 3 months exposure tuberculosis was not reported in patients who received placebo 5 mg twice daily of XELJANZ or 10 mg twice daily of XELJANZ

In the seven controlled trials during the 0 to 12 months exposure tuberculosis was reported in 0 patients who received 5 mg twice daily of XELJANZ and 6 patients (05 events per 100 patient-years) who received 10 mg twice daily of XELJANZ The rate difference between XELJANZ doses (and the corresponding 95 confidence interval) was 05 (01 09) events per 100 patient-years for 10 mg twice daily XELJANZ minus 5 mg twice daily XELJANZ

Cases of disseminated tuberculosis were also reported The median XELJANZ exposure prior to diagnosis of tuberculosis was 10 months (range from 152 to 960 days) [see Warnings and Precautions (51)]

Opportunistic Infections (excluding tuberculosis) In the seven controlled trials during the 0 to 3 months exposure opportunistic infections were not reported in patients who received placebo 5 mg twice daily of XELJANZ or 10 mg twice daily of XELJANZ

In the seven controlled trials during the 0 to 12 months exposure opportunistic infections were reported in 4 patients (03 events per 100 patient-years) who received 5 mg twice daily of XELJANZ and 4 patients (03 events per 100 patient-years) who received 10 mg twice daily of XELJANZ The rate difference between XELJANZ doses (and the corresponding 95 confidence interval) was 0 (-05 05) events per 100 patient-years for 10 mg twice daily XELJANZ minus 5 mg twice daily XELJANZ

The median XELJANZ exposure prior to diagnosis of an opportunistic infection was 8 months (range from 41 to 698 days) [see Warnings and Precautions (51)]

Malignancy In the seven controlled trials during the 0 to 3 months exposure malignancies excluding NMSC were reported in 0 patients who received placebo and 2 patients (03 events per 100 patientshy

9

Reference ID 3213422

years) who received either XELJANZ 5 mg or 10 mg twice daily The rate difference between treatment groups (and the corresponding 95 confidence interval) was 03 (-01 07) events per 100 patient-years for the combined 5 mg and 10 mg twice daily XELJANZ group minus placebo

In the seven controlled trials during the 0 to 12 months exposure malignancies excluding NMSC were reported in 5 patients (04 events per 100 patient-years) who received 5 mg twice daily of XELJANZ and 7 patients (06 events per 100 patient-years) who received 10 mg twice daily of XELJANZ The rate difference between XELJANZ doses (and the corresponding 95 confidence interval) was 02 (-04 07) events per 100 patient-years for 10 mg twice daily XELJANZ minus 5 mg twice daily XELJANZ One of these malignancies was a case of lymphoma that occurred during the 0 to 12 month period in a patient treated with XELJANZ 10 mg twice daily

The most common types of malignancy including malignancies observed during the long-term extension were lung and breast cancer followed by gastric colorectal renal cell prostate cancer lymphoma and malignant melanoma [see Warnings and Precautions (52)]

Laboratory Tests

Lymphocytes In the controlled clinical trials confirmed decreases in lymphocyte counts below 500 cellsmm3

occurred in 004 of patients for the 5 mg twice daily and 10 mg twice daily XELJANZ groups combined during the first 3 months of exposure

Confirmed lymphocyte counts less than 500 cellsmm3 were associated with an increased incidence of treated and serious infections [see Warnings and Precautions (54)]

Neutrophils In the controlled clinical trials confirmed decreases in ANC below 1000 cellsmm3 occurred in 007 of patients for the 5 mg twice daily and 10 mg twice daily XELJANZ groups combined during the first 3 months of exposure

There were no confirmed decreases in ANC below 500 cellsmm3 observed in any treatment group

There was no clear relationship between neutropenia and the occurrence of serious infections

In the long-term safety population the pattern and incidence of confirmed decreases in ANC remained consistent with what was seen in the controlled clinical trials [see Warnings and Precautions (54)]

Liver Enzyme Tests Confirmed increases in liver enzymes greater than 3 times the upper limit of normal (3x ULN) were observed in patients treated with XELJANZ In patients experiencing liver enzyme elevation modification of treatment regimen such as reduction in the dose of concomitant DMARD interruption of XELJANZ or reduction in XELJANZ dose resulted in decrease or normalization of liver enzymes

In the controlled monotherapy trials (0-3 months) no differences in the incidence of ALT or AST elevations were observed between the placebo and XELJANZ 5 mg and 10 mg twice daily groups

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In the controlled background DMARD trials (0-3 months) ALT elevations greater than 3x ULN were observed in 10 13 and 12 of patients receiving placebo 5 mg and 10 mg twice daily respectively In these trials AST elevations greater than 3x ULN were observed in 06 05 and 04 of patients receiving placebo 5 mg and 10 mg twice daily respectively

One case of drug-induced liver injury was reported in a patient treated with XELJANZ 10 mg twice daily for approximately 25 months The patient developed symptomatic elevations of AST and ALT greater than 3x ULN and bilirubin elevations greater than 2x ULN which required hospitalizations and a liver biopsy

Lipids In the controlled clinical trials dose-related elevations in lipid parameters (total cholesterol LDL cholesterol HDL cholesterol triglycerides) were observed at one month of exposure and remained stable thereafter Changes in lipid parameters during the first 3 months of exposure in the controlled clinical trials are summarized below

bull Mean LDL cholesterol increased by 15 in the XELJANZ 5 mg twice daily arm and 19 in the XELJANZ 10 mg twice daily arm

bull Mean HDL cholesterol increased by 10 in the XELJANZ 5 mg twice daily arm and 12 in the XELJANZ 10 mg twice daily arm

bull Mean LDLHDL ratios were essentially unchanged in XELJANZ-treated patients

In a controlled clinical trial elevations in LDL cholesterol and ApoB decreased to pretreatment levels in response to statin therapy

In the long-term safety population elevations in lipid parameters remained consistent with what was seen in the controlled clinical trials

11

Reference ID 3213422

Serum Creatinine In the controlled clinical trials dose-related elevations in serum creatinine were observed with XELJANZ treatment The mean increase in serum creatinine was lt01 mgdL in the 12-month pooled safety analysis however with increasing duration of exposure in the long-term extensions up to 2 of patients were discontinued from XELJANZ treatment due to the protocol-specified discontinuation criterion of an increase in creatinine by more than 50 of baseline The clinical significance of the observed serum creatinine elevations is unknown

Other Adverse Reactions Adverse reactions occurring in 2 or more of patients on 5 mg twice daily or 10 mg twice daily XELJANZ and at least 1 greater than that observed in patients on placebo with or without DMARD are summarized in Table 4

Table 4 Adverse Reactions Occurring in at Least 2 or More of Patients on 5 or 10 mg Twice Daily XELJANZ With or Without DMARD (0-3 months) and at Least 1 Greater Than That Observed in Patients on Placebo

XELJANZ 5 mg Twice Daily

XELJANZ 10 mg Twice Daily

Placebo

Preferred Term N = 1336

() N = 1349

() N = 809

()

Diarrhea 40 29 23

Nasopharyngitis 38 28 28

Upper respiratory tract infection 45 38 33

Headache 43 34 21

Hypertension 16 23 11

N reflects randomized and treated patients from the seven clinical trials

Other adverse reactions occurring in controlled and open-label extension studies included

Blood and lymphatic system disorders Anemia Metabolism and nutrition disorders Dehydration Psychiatric disorders Insomnia Nervous system disorders Paresthesia Respiratory thoracic and mediastinal disorders Dyspnea cough sinus congestion Gastrointestinal disorders Abdominal pain dyspepsia vomiting gastritis nausea Hepatobiliary disorders Hepatic steatosis Skin and subcutaneous tissue disorders Rash erythema pruritus Musculoskeletal connective tissue and bone disorders Musculoskeletal pain arthralgia tendonitis joint swelling General disorders and administration site conditions Pyrexia fatigue peripheral edema

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Reference ID 3213422

7 DRUG INTERACTIONS

71 Potent CYP3A4 Inhibitors Tofacitinib exposure is increased when XELJANZ is coadministered with potent inhibitors of cytochrome P450 (CYP) 3A4 (eg ketoconazole) [see Dosage and Administration (21) and Figure 3]

72 Moderate CYP3A4 and Potent CYP2C19 Inhibitors Tofacitinib exposure is increased when XELJANZ is coadministered with medications that result in both moderate inhibition of CYP3A4 and potent inhibition of CYP2C19 (eg fluconazole) [see Dosage and Administration (21) and Figure 3]

73 Potent CYP3A4 Inducers Tofacitinib exposure is decreased when XELJANZ is coadministered with potent CYP3A4 inducers (eg rifampin) [see Dosage and Administration (21) and Figure 3]

74 Immunosuppressive Drugs There is a risk of added immunosuppression when XELJANZ is coadministered with potent immunosuppressive drugs (eg azathioprine tacrolimus cyclosporine) Combined use of multiple-dose XELJANZ with potent immunosuppressives has not been studied in rheumatoid arthritis

8 USE IN SPECIFIC POPULATIONS

81 Pregnancy Teratogenic effects Pregnancy Category C There are no adequate and well-controlled studies in pregnant women XELJANZ should be used during pregnancy only if the potential benefit justifies the potential risk to the fetus Tofacitinib has been shown to be fetocidal and teratogenic in rats and rabbits when given at exposures 146 times and 13 times respectively the maximum recommended human dose (MRHD)

In a rat embryofetal developmental study tofacitinib was teratogenic at exposure levels approximately 146 times the MRHD (on an AUC basis at oral doses of 100 mgkgday) Teratogenic effects consisted of external and soft tissue malformations of anasarca and membranous ventricular septal defects respectively and skeletal malformations or variations (absent cervical arch bent femur fibula humerus radius scapula tibia and ulna sternoschisis absent rib misshapen femur branched rib fused rib fused sternebra and hemicentric thoracic centrum) In addition there was an increase in post-implantation loss consisting of early and late resorptions resulting in a reduced number of viable fetuses Mean fetal body weight was reduced No developmental toxicity was observed in rats at exposure levels approximately 58 times the MRHD (on an AUC basis at oral doses of 30 mgkgday) In the rabbit embryofetal developmental study tofacitinib was teratogenic at exposure levels approximately 13 times the MRHD (on an AUC basis at oral doses of 30 mgkgday) in the absence of signs of maternal toxicity Teratogenic effects included thoracogastroschisis omphalocele membranous ventricular septal defects and cranialskeletal malformations (microstomia microphthalmia)

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mid-line and tail defects In addition there was an increase in post-implantation loss associated with late resorptions No developmental toxicity was observed in rabbits at exposure levels approximately 3 times the MRHD (on an AUC basis at oral doses of 10 mgkgday)

Nonteratogenic effects In a peri- and postnatal rat study there were reductions in live litter size postnatal survival and pup body weights at exposure levels approximately 73 times the MRHD (on an AUC basis at oral doses of 50 mgkgday) There was no effect on behavioral and learning assessments sexual maturation or the ability of the F1 generation rats to mate and produce viable F2 generation fetuses in rats at exposure levels approximately 17 times the MRHD (on an AUC basis at oral doses of 10 mgkgday)

Pregnancy Registry To monitor the outcomes of pregnant women exposed to XELJANZ a pregnancy registry has been established Physicians are encouraged to register patients and pregnant women are encouraged to register themselves by calling 1-877-311-8972

83 Nursing Mothers Tofacitinib was secreted in milk of lactating rats It is not known whether tofacitinib is excreted in human milk Because many drugs are excreted in human milk and because of the potential for serious adverse reactions in nursing infants from tofacitinib a decision should be made whether to discontinue nursing or to discontinue the drug taking into account the importance of the drug for the mother

84 Pediatric Use The safety and effectiveness of XELJANZ in pediatric patients have not been established

85 Geriatric Use Of the 3315 patients who enrolled in Studies I to V a total of 505 rheumatoid arthritis patients were 65 years of age and older including 71 patients 75 years and older The frequency of serious infection among XELJANZ-treated subjects 65 years of age and older was higher than among those under the age of 65 As there is a higher incidence of infections in the elderly population in general caution should be used when treating the elderly

86 Hepatic Impairment No dose adjustment is required in patients with mild hepatic impairment XELJANZ dose should be reduced to 5 mg once daily in patients with moderate hepatic impairment The safety and efficacy of XELJANZ have not been studied in patients with severe hepatic impairment or in patients with positive hepatitis B virus or hepatitis C virus serology [see Dosage and Administration (21) and Warnings and Precautions (56)]

87 Renal Impairment No dose adjustment is required in patients with mild renal impairment XELJANZ dose should be reduced to 5 mg once daily in patients with moderate and severe renal impairment [see Dosage and Administration (21)] In clinical trials XELJANZ was not evaluated in rheumatoid arthritis patients with baseline creatinine clearance values (estimated by the Cockroft-Gault equation) less than 40 mLmin

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10 OVERDOSAGE Signs Symptoms and Laboratory Findings of Acute Overdosage in Humans There is no experience with overdose of XELJANZ

Treatment or Management of Overdose Pharmacokinetic data up to and including a single dose of 100 mg in healthy volunteers indicate that more than 95 of the administered dose is expected to be eliminated within 24 hours

There is no specific antidote for overdose with XELJANZ In case of an overdose it is recommended that the patient be monitored for signs and symptoms of adverse reactions Patients who develop adverse reactions should receive appropriate treatment

11 DESCRIPTION XELJANZ is the citrate salt of tofacitinib a JAK inhibitor

Tofacitinib citrate is a white to off-white powder with the following chemical name (3R4R)-4shymethyl-3-(methyl-7H-pyrrolo [23-d]pyrimidin-4-ylamino)-szlig-oxo-1-piperidinepropanenitrile 2shyhydroxy-123-propanetricarboxylate (11) It is freely soluble in water

Tofacitinib citrate has a molecular weight of 5045 Daltons (or 3124 Daltons as the tofacitinib free base) and a molecular formula of C16H20N6ObullC6H8O7 The chemical structure of tofacitinib citrate is

NN

Me

Me

N

N N H

O N

HO2C CO2H

HO2C

OH bull

XELJANZ is supplied for oral administration as 5 mg tofacitinib (equivalent to 8 mg tofacitinib citrate) white round immediate-release film-coated tablet Each tablet of XELJANZ contains the appropriate amount of XELJANZ as a citrate salt and the following inactive ingredients microcrystalline cellulose lactose monohydrate croscarmellose sodium magnesium stearate HPMC 2910Hypromellose 6cP titanium dioxide macrogolPEG3350 and triacetin

12 CLINICAL PHARMACOLOGY

121 Mechanism of Action Tofacitinib is a Janus kinase (JAK) inhibitor JAKs are intracellular enzymes which transmit signals arising from cytokine or growth factor-receptor interactions on the cellular membrane to influence cellular processes of hematopoiesis and immune cell function Within the signaling pathway JAKs phosphorylate and activate Signal Transducers and Activators of Transcription (STATs) which modulate intracellular activity including gene expression Tofacitinib modulates

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the signaling pathway at the point of JAKs preventing the phosphorylation and activation of STATs JAK enzymes transmit cytokine signaling through pairing of JAKs (eg JAK1JAK3 JAK1JAK2 JAK1TyK2 JAK2JAK2) Tofacitinib inhibited the in vitro activities of JAK1JAK2 JAK1JAK3 and JAK2JAK2 combinations with IC50 of 406 56 and 1377 nM respectively However the relevance of specific JAK combinations to therapeutic effectiveness is not known

122 Pharmacodynamics Treatment with XELJANZ was associated with dose-dependent reductions of circulating CD1656+ natural killer cells with estimated maximum reductions occurring at approximately 8shy10 weeks after initiation of therapy These changes generally resolved within 2-6 weeks after discontinuation of treatment Treatment with XELJANZ was associated with dose-dependent increases in B cell counts Changes in circulating T-lymphocyte counts and T-lymphocyte subsets (CD3+ CD4+ and CD8+) were small and inconsistent The clinical significance of these changes is unknown

Total serum IgG IgM and IgA levels after 6-month dosing in patients with rheumatoid arthritis were lower than placebo however changes were small and not dose-dependent

After treatment with XELJANZ in patients with rheumatoid arthritis rapid decreases in serum C-reactive protein (CRP) were observed and maintained throughout dosing Changes in CRP observed with XELJANZ treatment do not reverse fully within 2 weeks after discontinuation indicating a longer duration of pharmacodynamic activity compared to the pharmacokinetic half-life

123 Pharmacokinetics Following oral administration of XELJANZ peak plasma concentrations are reached within 05shy1 hour elimination half-life is ~3 hours and a dose-proportional increase in systemic exposure was observed in the therapeutic dose range Steady state concentrations are achieved in 24-48 hours with negligible accumulation after twice daily administration

Absorption The absolute oral bioavailability of tofacitinib is 74 Coadministration of XELJANZ with a high-fat meal resulted in no changes in AUC while Cmax was reduced by 32 In clinical trials XELJANZ was administered without regard to meals

Distribution After intravenous administration the volume of distribution is 87 L The protein binding of tofacitinib is ~40 Tofacitinib binds predominantly to albumin and does not appear to bind to 1-acid glycoprotein Tofacitinib distributes equally between red blood cells and plasma

Metabolism and Elimination Clearance mechanisms for tofacitinib are approximately 70 hepatic metabolism and 30 renal excretion of the parent drug The metabolism of tofacitinib is primarily mediated by CYP3A4 with minor contribution from CYP2C19 In a human radiolabeled study more than 65 of the total circulating radioactivity was accounted for by unchanged tofacitinib with the remaining

16

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35 attributed to 8 metabolites each accounting for less than 8 of total radioactivity The pharmacologic activity of tofacitinib is attributed to the parent molecule

Pharmacokinetics in Rheumatoid Arthritis Patients Population PK analysis in rheumatoid arthritis patients indicated no clinically relevant change in tofacitinib exposure after accounting for differences in renal function (ie creatinine clearance) between patients based on age weight gender and race (Figure 1) An approximately linear relationship between body weight and volume of distribution was observed resulting in higher peak (Cmax) and lower trough (Cmin) concentrations in lighter patients However this difference is not considered to be clinically relevant The between-subject variability ( coefficient of variation) in AUC of tofacitinib is estimated to be approximately 27

Specific Populations The effect of renal and hepatic impairment and other intrinsic factors on the pharmacokinetics of tofacitinib is shown in Figure 1

17

Reference ID 3213422

Figure 1 Impact of Intrinsic Factors on Tofacitinib Pharmacokinetics

Intrinsic Factor

Weight = 40 kg

Weight = 140 kg

Age = 80 years

Female

Asian

Black

Hispanic

Renal Impairment (Mild)

Renal Impairment (Moderate)

Renal Impairment (Severe)

Hepatic Impairment (Mild)

Hepatic Impairment (Moderate)

PK

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

0

Ratio and 90 CI Recommendation

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

Reduce Dose to 5 mg Once Daily

Reduce Dose to 5 mg Once Daily

No Dose Adjustment

Reduce Dose to 5 mg Once Daily

05 1 15 2 25 3 35 4

Ratio relative to reference

Supplemental doses are not necessary in patients after dialysis

Reference values for weight age gender and race comparisons are 70 kg 55 years male and White respectively Reference groups for renal and hepatic impairment data are subjects with normal renal and hepatic function

Drug Interactions

Potential for XELJANZ to Influence the PK of Other Drugs In vitro studies indicate that tofacitinib does not significantly inhibit or induce the activity of the

18

Reference ID 3213422

major human drug-metabolizing CYPs (CYP1A2 CYP2B6 CYP2C8 CYP2C9 CYP2C19 CYP2D6 and CYP3A4) at concentrations exceeding 185 times the steady state Cmax of a 5 mg twice daily dose These in vitro results were confirmed by a human drug interaction study showing no changes in the PK of midazolam a highly sensitive CYP3A4 substrate when coadministered with XELJANZ

In rheumatoid arthritis patients the oral clearance of tofacitinib does not vary with time indicating that tofacitinib does not normalize CYP enzyme activity in rheumatoid arthritis patients Therefore coadministration with XELJANZ is not expected to result in clinically relevant increases in the metabolism of CYP substrates in rheumatoid arthritis patients

In vitro data indicate that the potential for tofacitinib to inhibit transporters such as Pshyglycoprotein organic anionic or cationic transporters at therapeutic concentrations is low

Dosing recommendations for coadministered drugs following administration with XELJANZ are shown in Figure 2

Figure 2 Impact of XELJANZ on PK of Other Drugs

Coadministered PK Drug

Methotrexate AUC

Cmax

CYP3A Substrate AUC Midazolam

Cmax

Oral ContraceptivesLevonorgestrel

AUC

Cmax

Ethinyl Estradiol AUC

Cmax

OCT amp MATE Substrate AUC Metformin

Cmax

Ratio and 90 CI Recommendation

No Dose Adjustment

No dose adjustment for CYP3A substrates such as midazolam

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

0 025 05 075 1 125 15 175 2

Ratio relative to reference

Note Reference group is administration of concomitant medication alone OCT = Organic Cationic Transporter MATE = Multidrug and Toxic Compound Extrusion

Potential for Other Drugs to Influence the PK of Tofacitinib Since tofacitinib is metabolized by CYP3A4 interaction with drugs that inhibit or induce CYP3A4 is likely Inhibitors of CYP2C19 alone or P-glycoprotein are unlikely to substantially alter the PK of tofacitinib Dosing recommendations for XELJANZ for administration with CYP inhibitors or inducers are shown in Figure 3

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Figure 3 Impact of Other Drugs on PK of XELJANZ

Coadministered PK Drug

CYP3A Inhib itor AUC Ketoconazole

Cmax

CYP3A amp CYP2C19 Inhib itor AUC

Cmax Fluconazole

CYP Inducer Rifampin AUC

Cmax

Methotrexate AUC

Cmax

Tacrolimus AUC Cmax

Cyclosporine AUC

Cmax

Ratio and 90 CI Recommendation

Reduce XELJANZ Dose to 5 mg Once Daily

Reduce XELJANZ Dose to 5 mg Once Daily

May Decrease Efficacy

No Dose Adjustment

There is a risk of added immunosuppressionif XELJANZ is taken with Tacrolimus

There is a risk of added immunosuppressionif XELJANZ is taken with Cyclosporine

0 05 1 15 2 25

Ratio relative to reference

Note Reference group is administration of tofacitinib alone

13 NONCLINICAL TOXICOLOGY

131 Carcinogenesis Mutagenesis Impairment of Fertility In a 39-week toxicology study in monkeys tofacitinib at exposure levels approximately 6 times the MRHD (on an AUC basis at oral doses of 5 mgkg twice daily) produced lymphomas No lymphomas were observed in this study at exposure levels 1 times the MRHD (on an AUC basis at oral doses of 1 mgkg twice daily)

The carcinogenic potential of tofacitinib was assessed in 6-month rasH2 transgenic mouse carcinogenicity and 2-year rat carcinogenicity studies Tofacitinib at exposure levels approximately 34 times the MRHD (on an AUC basis at oral doses of 200 mgkgday) was not carcinogenic in mice

In the 24-month oral carcinogenicity study in Sprague-Dawley rats tofacitinib caused benign Leydig cell tumors hibernomas (malignancy of brown adipose tissue) and benign thymomas at doses greater than or equal to 30 mgkgday (approximately 42 times the exposure levels at the MRHD on an AUC basis) The relevance of benign Leydig cell tumors to human risk is not known

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Reference ID 3213422

Tofacitinib was not mutagenic in the bacterial reverse mutation assay It was positive for clastogenicity in the in vitro chromosome aberration assay with human lymphocytes in the presence of metabolic enzymes but negative in the absence of metabolic enzymes Tofacitinib was negative in the in vivo rat micronucleus assay and in the in vitro CHO-HGPRT assay and the in vivo rat hepatocyte unscheduled DNA synthesis assay

In rats tofacitinib at exposure levels approximately 17 times the MRHD (on an AUC basis at oral doses of 10 mgkgday) reduced female fertility due to increased post-implantation loss There was no impairment of female rat fertility at exposure levels of tofacitinib equal to the MRHD (on an AUC basis at oral doses of 1 mgkgday) Tofacitinib exposure levels at approximately 133 times the MRHD (on an AUC basis at oral doses of 100 mgkgday) had no effect on male fertility sperm motility or sperm concentration

14 CLINICAL STUDIES The XELJANZ clinical development program included two dose-ranging trials and five confirmatory trials

DOSE-RANGING TRIALS Dose selection for XELJANZ was based on two pivotal dose-ranging trials

Dose-Ranging Study 1 was a 6-month monotherapy trial in 384 patients with active rheumatoid arthritis who had an inadequate response to a DMARD Patients who previously received adalimumab therapy were excluded Patients were randomized to 1 of 7 monotherapy treatments XELJANZ 1 3 5 10 or 15 mg twice daily adalimumab 40 mg subcutaneously every other week for 10 weeks followed by XELJANZ 5 mg twice daily for 3 months or placebo

Dose-Ranging Study 2 was a 6-month trial in which 507 patients with active rheumatoid arthritis who had an inadequate response to MTX alone received one of 6 dose regimens of XELJANZ (20 mg once daily 1 3 5 10 or 15 mg twice daily) or placebo added to background MTX

The results of XELJANZ-treated patients achieving ACR20 responses in Studies 1 and 2 are shown in Figure 4 Although a dose-response relationship was observed in Study 1 the proportion of patients with an ACR20 response did not clearly differ between the 10 mg and 15 mg doses Furthermore there was a smaller proportion of patients who responded to adalimumab monotherapy compared to those treated with XELJANZ doses 3 mg twice daily and greater In Study 2 a smaller proportion of patients achieved an ACR20 response in the placebo and XELJANZ 1 mg groups compared to patients treated with the other XELJANZ doses However there was no difference in the proportion of responders among patients treated with XELJANZ 3 5 10 15 mg twice daily or 20 mg once daily doses

21

Reference ID 3213422

Figure 4 Proportion of Patients with ACR20 Response at Month 3 in Dose-Ranging Studies 1 and 2

CONFIRMATORY TRIALS Study I was a 6-month monotherapy trial in which 610 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to a DMARD (nonbiologic or biologic) received XELJANZ 5 or 10 mg twice daily or placebo At the Month 3 visit all patients randomized to placebo treatment were advanced in a blinded fashion to a second predetermined treatment of XELJANZ 5 or 10 mg twice daily The primary endpoints at Month 3 were the proportion of patients who achieved an ACR20 response changes in Health Assessment Questionnaire ndash Disability Index (HAQ-DI) and rates of Disease Activity Score DAS28-4(ESR) less than 26

Study II was a 12-month trial in which 792 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to a nonbiologic DMARD received XELJANZ 5 or 10 mg twice daily or placebo added to background DMARD treatment (excluding potent immunosuppressive treatments such as azathioprine or cyclosporine) At the Month 3 visit nonresponding patients were advanced in a blinded fashion to a second predetermined treatment of XELJANZ 5 or 10 mg twice daily At the end of Month 6 all placebo patients were advanced to their second predetermined treatment in a blinded fashion The primary endpoints were the proportion of patients who achieved an ACR20 response at Month 6 changes in HAQ-DI at Month 3 and rates of DAS28-4(ESR) less than 26 at Month 6

Study III was a 12-month trial in 717 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to MTX Patients received XELJANZ 5 or 10 mg twice daily adalimumab 40 mg subcutaneously every other week or placebo added to background MTX

22

Reference ID 3213422

Placebo patients were advanced as in Study II The primary endpoints were the proportion of patients who achieved an ACR20 response at Month 6 HAQ-DI at Month 3 and DAS28-4(ESR) less than 26 at Month 6

Study IV is an ongoing 2-year trial with a planned analysis at 1 year in which 797 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to MTX received XELJANZ 5 or 10 mg twice daily or placebo added to background MTX Placebo patients were advanced as in Study II The primary endpoints were the proportion of patients who achieved an ACR20 response at Month 6 mean change from baseline in van der Heijde-modified total Sharp Score (mTSS) at Month 6 HAQ-DI at Month 3 and DAS28-4(ESR) less than 26 at Month 6

Study V was a 6-month trial in which 399 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to at least one approved TNF-inhibiting biologic agent received XELJANZ 5 or 10 mg twice daily or placebo added to background MTX At the Month 3 visit all patients randomized to placebo treatment were advanced in a blinded fashion to a second predetermined treatment of XELJANZ 5 or 10 mg twice daily The primary endpoints at Month 3 were the proportion of patients who achieved an ACR20 response HAQ-DI and DAS28-4(ESR) less than 26

Clinical Response The percentages of XELJANZ-treated patients achieving ACR20 ACR50 and ACR70 responses in Studies I IV and V are shown in Table 5 Similar results were observed with Studies II and III In all trials patients treated with either 5 or 10 mg twice daily XELJANZ had higher ACR20 ACR50 and ACR70 response rates versus placebo with or without background DMARD treatment at Month 3 and Month 6 Higher ACR20 response rates were observed within 2 weeks compared to placebo In the 12-month trials ACR response rates in XELJANZ-treated patients were consistent at 6 and 12 months

23

Reference ID 3213422

Table 5 Proportion of Patients with an ACR Response Percent of Patients

Monotherapy in Nonbiologic or Biologic DMARD Inadequate

Respondersc

MTX Inadequate Respondersd TNF Inhibitor Inadequate Responderse

Study I Study IV Study V

Na PBO

122

XELJANZ 5 mg Twice

Daily

243

XELJANZ 10 mg Twice Daily

245

PBO + MTX

160

XELJANZ 5 mg Twice

Daily + MTX

321

XELJANZ 10 mg Twice

Daily + MTX

316

PBO +

MTX

132

XELJANZ 5 mg Twice

Daily + MTX

133

XELJANZ 10 mg Twice

Daily + MTX

134 ACR20 Month 3 Month 6

26 NAb

59 69

65 70

27 25

55 50

67 62

24 NA

41 51

48 54

ACR50 Month 3 Month 6

12 NA

31 42

36 46

8 9

29 32

37 44

8 NA

26 37

28 30

ACR70 Month 3 Month 6

6 NA

15 22

20 29

3 1

11 14

17 23

2 NA

14 16

10 16

a N is number of randomized and treated patients b NA Not applicable as data for placebo treatment is not available beyond 3 months in Studies I and V due to placebo advancement c Inadequate response to at least one DMARD (biologic or nonbiologic) due to lack of efficacy or toxicity d Inadequate response to MTX defined as the presence of sufficient residual disease activity to meet the entry criteria e Inadequate response to a least one TNF inhibitor due to lack of efficacy andor intolerance

In Study IV a greater proportion of patients treated with XELJANZ 5 mg or 10 mg twice daily plus MTX achieved a low level of disease activity as measured by a DAS28-4(ESR) less than 26 at 6 months compared to those treated with MTX alone (Table 6)

24

Reference ID 3213422

Table 6 Proportion of Patients with DAS28-4(ESR) Less Than 26 with Number of Residual Active Joints Study IV DAS28-4(ESR) Less Than 26 Placebo + MTX

160

XELJANZ 5 mg Twice Daily + MTX

321

XELJANZ 10 mg Twice Daily + MTX

316 Proportion of responders at Month 6 (n) 1 (2) 6 (19) 13 (42)

Of responders proportion with 0 active joints (n)

50 (1) 42 (8) 36 (15)

Of responders proportion with 1 active joint (n) 0 5 (1) 17 (7) Of responders proportion with 2 active joints (n)

0 32 (6) 7 (3)

Of responders proportion with 3 or more active joints (n)

50 (1) 21 (4) 40 (17)

The results of the components of the ACR response criteria for Study IV are shown in Table 7 Similar results were observed in Studies I II III and V

Table 7 Components of ACR Response at 3 Months Study IV

XELJANZ

5 mg

Twice Daily + MTX

N=321

XELJANZ

10 mg

Twice Daily + MTX

N=316

Placebo + MTX

N=160

Component (mean) a Baseline Month 3a Baseline Month 3a Baseline Month 3a

Number of tender

joints 24 13 23 10 23 18

(0-68) (14) (14) (15) (12) (13) (14)

Number of swollen

joints 14 6 14 6 14 10

(0-66) (8) (8) (8) (7) (9) (9)

Painb 58

(23)

34

(23)

58

(24)

29

(22)

55

(24)

47

(24)

Patient global

assessmentb

58

(24)

35

(23)

57

(23)

29

(20)

54

(23)

47

(24)

Disability index

(HAQ-DI)c 141 099 140 084 132 119

(068) (065) (066) (064) (067) (068)

25

Reference ID 3213422

Physician global

assessmentb 59 30 58 24 56 43

(16) (19) (17) (17) (18) (22)

CRP (mgL) 153 71 171 44 137 146

(190) (191) (269) (86) (149) (187) aData shown is mean (Standard Deviation) at Month 3bVisual analog scale 0 = best 100 = worst cHealth Assessment Questionnaire Disability Index 0 = best 3 = worst 20 questions categories dressing and grooming arising eating walking hygiene reach grip and activities

The percent of ACR20 responders by visit for Study IV is shown in Figure 5 Similar responses were observed in Studies I II III and V

Figure 5 Percentage of ACR20 Responders by Visit for Study IV

Physical Function Response Improvement in physical functioning was measured by the HAQ-DI Patients receiving XELJANZ 5 and 10 mg twice daily demonstrated greater improvement from baseline in physical functioning compared to placebo at Month 3

The mean (95 CI) difference from placebo in HAQ-DI improvement from baseline at Month 3 in Study III was -022 (-035 -010) in patients receiving 5 mg XELJANZ twice daily and -032 (-044 -019) in patients receiving 10 mg XELJANZ twice daily Similar results were obtained in

26

Reference ID 3213422

Studies I II IV and V In the 12-month trials HAQ-DI results in XELJANZ-treated patients were consistent at 6 and 12 months

16 HOW SUPPLIEDSTORAGE AND HANDLING XELJANZ is provided as 5 mg tofacitinib (equivalent to 8 mg tofacitinib citrate) tablets White round immediate-release film-coated tablets debossed with ldquoPfizerrdquo on one side and ldquoJKI 5rdquo on the other side and available in

Bottles of 60 NDC 0069-1001-01 Bottles of 180 NDC 0069-1001-02

Storage and Handling Store at 20degC to 25degC (68degF to 77degF) [See USP Controlled Room Temperature]

Do not repackage

17 PATIENT COUNSELING INFORMATION See FDA-approved patient labeling (Medication Guide)

Inform patients of the availability of a Medication Guide and instruct them to read the Medication Guide prior to taking XELJANZ Instruct patients to take XELJANZ only as prescribed

This productrsquos label may have been updated For current full prescribing information please visit wwwpfizercom

LAB-0445-10

27

Reference ID 3213422

MEDICATION GUIDE

XELJANZ (ZELrsquo JANSrsquo) (tofacitinib)

Read this Medication Guide before you start taking XELJANZ and each time you get a refill There may be new information This Medication Guide does not take the place of talking to your healthcare provider about your medical condition or treatment

What is the most important information I should know about XELJANZ XELJANZ may cause serious side effects including

1 Serious infections

XELJANZ is a medicine that affects your immune system XELJANZ can lower the ability of your immune system to fight infections Some people have serious infections while taking XELJANZ including tuberculosis (TB) and infections caused by bacteria fungi or viruses that can spread throughout the body Some people have died from these infections Your healthcare provider should test you for TB before starting XELJANZ Your healthcare provider should monitor you closely for signs and symptoms of

TB infection during treatment with XELJANZ

You should not start taking XELJANZ if you have any kind of infection unless your healthcare provider tells you it is okay

Before starting XELJANZ tell your healthcare provider if you think you have an infection or have symptoms of an infection such as

o fever sweating or chills o warm red or painful skin o muscle aches or sores on your body o cough o diarrhea or stomach pain o shortness of breath o burning when you urinate o blood in phlegm or urinating more often o weight loss than normal

o feeling very tired are being treated for an infection get a lot of infections or have infections that keep coming back have diabetes HIV or a weak immune system People with these conditions

have a higher chance for infections have TB or have been in close contact with someone with TB live or have lived or have traveled to certain parts of the country (such as the

Ohio and Mississippi River valleys and the Southwest) where there is an increased chance for getting certain kinds of fungal infections (histoplasmosis coccidioidomycosis or blastomycosis) These infections may happen or become more severe if you use XELJANZ Ask your healthcare provider if you do not know if you have lived in an area where these infections are common

have or have had hepatitis B or C

28

Reference ID 3213422

After starting XELJANZ call your healthcare provider right away if you have any symptoms of an infection XELJANZ can make you more likely to get infections or make worse any infection that you have

2 Cancer and immune system problems

XELJANZ may increase your risk of certain cancers by changing the way your immune system works

Lymphoma and other cancers can happen in patients taking XELJANZ Tell your healthcare provider if you have ever had any type of cancer

Some people who have taken XELJANZ with certain other medicines to prevent kidney transplant rejection have had a problem with certain white blood cells growing out of control (Epstein Barr Virus-associated post transplant lymphoproliferative disorder)

3 Tears (perforation) in the stomach or intestines

Tell your healthcare provider if you have had diverticulitis (inflammation in parts of the large intestine) or ulcers in your stomach or intestines Some people taking XELJANZ get tears in their stomach or intestine This happens most often in people who also take nonsteroidal anti-inflammatory drugs (NSAIDs) corticosteroids or methotrexate

Tell your healthcare provider right away if you have fever and stomach-area pain that does not go away and a change in your bowel habits

4 Changes in certain laboratory test results Your healthcare provider should do blood tests before you start receiving XELJANZ and while you take XELJANZ to check for the following side effects

changes in lymphocyte counts Lymphocytes are white blood cells that help the body fight off infections

low neutrophil counts Neutrophils are white blood cells that help the body fight off infections

low red blood cell count This may mean that you have anemia which may make you feel weak and tired

Your healthcare provider should routinely check certain liver tests

You should not receive XELJANZ if your lymphocyte count neutrophil count or red blood cell count is too low or your liver tests are too high

Your healthcare provider may stop your XELJANZ treatment for a period of time if needed because of changes in these blood test results

29

Reference ID 3213422

You may also have changes in other laboratory tests such as your blood cholesterol levels Your healthcare provider should do blood tests to check your cholesterol levels 4 to 8 weeks after you start receiving XELJANZ and as needed after that Normal cholesterol levels are important to good heart health

See ldquoWhat are the possible side effects of XELJANZrdquo for more information about side effects

What is XELJANZ

XELJANZ is a prescription medicine called a Janus kinase (JAK) inhibitor XELJANZ is used to treat adults with moderately to severely active rheumatoid arthritis in which methotrexate did not work well

It is not known if XELJANZ is safe and effective in people with Hepatitis B or C

XELJANZ is not for people with severe liver problems

It is not known if XELJANZ is safe and effective in children

What should I tell my healthcare provider before taking XELJANZ

XELJANZ may not be right for you Before taking XELJANZ tell your healthcare provider if you have an infection See ldquoWhat is the most important information I should know

about XELJANZrdquo have liver problems have kidney problems have any stomach area (abdominal) pain or been diagnosed with diverticulitis or

ulcers in your stomach or intestines have had a reaction to tofacitinib or any of the ingredients in XELJANZ have recently received or are scheduled to receive a vaccine People who take

XELJANZ should not receive live vaccines People taking XELJANZ can receive non-live vaccines

have any other medical conditions plan to become pregnant or are pregnant It is not known if XELJANZ will harm

an unborn baby

Pregnancy Registry Pfizer has a registry for pregnant women who take XELJANZ The purpose of this registry is to check the health of the pregnant mother and her baby If you are pregnant or become pregnant while taking XELJANZ talk to your healthcare provider about how you can join this pregnancy registry or you may contact the registry at 1-877-311-8972 to enroll

plan to breastfeed or are breastfeeding You and your healthcare provider should decide if you will take XELJANZ or breastfeed You should not do both

30

Reference ID 3213422

Tell your healthcare provider about all the medicines you take including prescription and non-prescription medicines vitamins and herbal supplements XELJANZ and other medicines may affect each other causing side effects

Especially tell your healthcare provider if you take any other medicines to treat your rheumatoid arthritis You should not take

tocilizumab (Actemrareg) etanercept (Enbrelreg) adalimumab (Humirareg) infliximab (Remicadereg) rituximab (Rituxanreg) abatacept (Orenciareg) anakinra (Kineretreg) certolizumab (Cimziareg) golimumab (Simponireg) azathioprine cyclosporine or other immunosuppressive drugs while you are taking XELJANZ Taking XELJANZ with these medicines may increase your risk of infection

medicines that affect the way certain liver enzymes work Ask your healthcare provider if you are not sure if your medicine is one of these

Know the medicines you take Keep a list of them to show your healthcare provider and pharmacist when you get a new medicine

How should I take XELJANZ

Take XELJANZ as your healthcare provider tells you to take it

Take XELJANZ 2 times a day with or without food

If you take too much XELJANZ call your healthcare provider or go the nearest hospital emergency room right away

What are possible side effects of XELJANZ

XELJANZ may cause serious side effects including

See ldquoWhat is the most important information I should know about XELJANZrdquo

Hepatitis B or C activation infection in people who carry the virus in their blood If you are a carrier of the hepatitis B or C virus (viruses that affect the liver) the virus may become active while you use XELJANZ Your healthcare provider may do blood tests before you start treatment with XELJANZ and while you are using XELJANZ Tell your healthcare provider if you have any of the following symptoms of a possible hepatitis B or C infection

o feel very tired o fevers o skin or eyes look yellow o chills o little or no appetite o stomach discomfort o vomiting o muscle aches o clay-colored bowel o dark urine

movements o skin rash

31

Reference ID 3213422

Common side effects of XELJANZ include upper respiratory tract infections (common cold sinus infections) headache diarrhea nasal congestion sore throat and runny nose (nasopharyngitis)

Tell your healthcare provider if you have any side effect that bothers you or that does not go away

These are not all the possible side effects of XELJANZ For more information ask your healthcare provider or pharmacist

Call your doctor for medical advice about side effects You may report side effects to FDA at 1-800-FDA-1088

You may also report side effects to Pfizer at 1-800-438-1985

How should I store XELJANZ

Store XELJANZ at 68degF to 77degF (room temperature)

Safely throw away medicine that is out of date or no longer needed

Keep XELJANZ and all medicines out of the reach of children

General information about the safe and effective use of XELJANZ

Medicines are sometimes prescribed for purposes other than those listed in a Medication Guide Do not use XELJANZ for a condition for which it was not prescribed Do not give XELJANZ to other people even if they have the same symptoms you have It may harm them

This Medication Guide summarizes the most important information about XELJANZ If you would like more information talk to your healthcare provider You can ask your pharmacist or healthcare provider for information about XELJANZ that is written for health professionals

What are the ingredients in XELJANZ

Active ingredient tofacitinib citrate

Inactive ingredients microcrystalline cellulose lactose monohydrate croscarmellose sodium magnesium stearate HPMC 2910Hypromellose 6cP titanium dioxide macrogolPEG3350 and triacetin

32

Reference ID 3213422

This Medication Guide has been approved by the US Food and Drug Administration

LAB-0535-10 Issued November 2012

33

Reference ID 3213422

56 Hepatic Impairment Treatment with XELJANZ is not recommended in patients with severe hepatic impairment [see Adverse Reactions (61) and Use in Specific Populations (86)]

6 ADVERSE REACTIONS Because clinical studies are conducted under widely varying conditions adverse reaction rates observed in the clinical studies of a drug cannot be directly compared to rates in the clinical studies of another drug and may not predict the rates observed in a broader patient population in clinical practice

The following data includes two Phase 2 and five Phase 3 double-blind controlled multicenter trials In these trials patients were randomized to doses of XELJANZ 5 mg twice daily (292 patients) and 10 mg twice daily (306 patients) monotherapy XELJANZ 5 mg twice daily (1044 patients) and 10 mg twice daily (1043 patients) in combination with DMARDs (including methotrexate) and placebo (809 patients) All seven protocols included provisions for patients taking placebo to receive treatment with XELJANZ at Month 3 or Month 6 either by patient response (based on uncontrolled disease activity) or by design so that adverse events cannot always be unambiguously attributed to a given treatment Therefore some analyses that follow include patients who changed treatment by design or by patient response from placebo to XELJANZ in both the placebo and XELJANZ group of a given interval Comparisons between placebo and XELJANZ were based on the first 3 months of exposure and comparisons between XELJANZ 5 mg twice daily and XELJANZ 10 mg twice daily were based on the first 12 months of exposure

The long-term safety population includes all patients who participated in a double-blind controlled trial (including earlier development phase studies) and then participated in one of two long-term safety studies The design of the long-term safety studies allowed for modification of XELJANZ doses according to clinical judgment This limits the interpretation of the long-term safety data with respect to dose

61 Clinical Trial Experience The most common serious adverse reactions were serious infections [see Warnings and Precautions (51)]

The proportion of patients who discontinued treatment due to any adverse reaction during the 0 to 3 months exposure in the double-blind placebo-controlled trials was 4 for patients taking XELJANZ and 3 for placebo-treated patients

Overall Infections

In the seven controlled trials during the 0 to 3 months exposure the overall frequency of infections was 20 and 22 in the 5 mg twice daily and 10 mg twice daily groups respectively and 18 in the placebo group

The most commonly reported infections with XELJANZ were upper respiratory tract infections nasopharyngitis and urinary tract infections (4 3 and 2 of patients respectively)

8

Reference ID 3213422

Serious Infections In the seven controlled trials during the 0 to 3 months exposure serious infections were reported in 1 patient (05 events per 100 patient-years) who received placebo and 11 patients (17 events per 100 patient-years) who received XELJANZ 5 mg or 10 mg twice daily The rate difference between treatment groups (and the corresponding 95 confidence interval) was 11 (-04 25) events per 100 patient-years for the combined 5 mg twice daily and 10 mg twice daily XELJANZ group minus placebo

In the seven controlled trials during the 0 to 12 months exposure serious infections were reported in 34 patients (27 events per 100 patient-years) who received 5 mg twice daily of XELJANZ and 33 patients (27 events per 100 patient-years) who received 10 mg twice daily of XELJANZ The rate difference between XELJANZ doses (and the corresponding 95 confidence interval) was -01 (-13 12) events per 100 patient-years for 10 mg twice daily XELJANZ minus 5 mg twice daily XELJANZ

The most common serious infections included pneumonia cellulitis herpes zoster and urinary tract infection [see Warnings and Precautions (51)]

Tuberculosis In the seven controlled trials during the 0 to 3 months exposure tuberculosis was not reported in patients who received placebo 5 mg twice daily of XELJANZ or 10 mg twice daily of XELJANZ

In the seven controlled trials during the 0 to 12 months exposure tuberculosis was reported in 0 patients who received 5 mg twice daily of XELJANZ and 6 patients (05 events per 100 patient-years) who received 10 mg twice daily of XELJANZ The rate difference between XELJANZ doses (and the corresponding 95 confidence interval) was 05 (01 09) events per 100 patient-years for 10 mg twice daily XELJANZ minus 5 mg twice daily XELJANZ

Cases of disseminated tuberculosis were also reported The median XELJANZ exposure prior to diagnosis of tuberculosis was 10 months (range from 152 to 960 days) [see Warnings and Precautions (51)]

Opportunistic Infections (excluding tuberculosis) In the seven controlled trials during the 0 to 3 months exposure opportunistic infections were not reported in patients who received placebo 5 mg twice daily of XELJANZ or 10 mg twice daily of XELJANZ

In the seven controlled trials during the 0 to 12 months exposure opportunistic infections were reported in 4 patients (03 events per 100 patient-years) who received 5 mg twice daily of XELJANZ and 4 patients (03 events per 100 patient-years) who received 10 mg twice daily of XELJANZ The rate difference between XELJANZ doses (and the corresponding 95 confidence interval) was 0 (-05 05) events per 100 patient-years for 10 mg twice daily XELJANZ minus 5 mg twice daily XELJANZ

The median XELJANZ exposure prior to diagnosis of an opportunistic infection was 8 months (range from 41 to 698 days) [see Warnings and Precautions (51)]

Malignancy In the seven controlled trials during the 0 to 3 months exposure malignancies excluding NMSC were reported in 0 patients who received placebo and 2 patients (03 events per 100 patientshy

9

Reference ID 3213422

years) who received either XELJANZ 5 mg or 10 mg twice daily The rate difference between treatment groups (and the corresponding 95 confidence interval) was 03 (-01 07) events per 100 patient-years for the combined 5 mg and 10 mg twice daily XELJANZ group minus placebo

In the seven controlled trials during the 0 to 12 months exposure malignancies excluding NMSC were reported in 5 patients (04 events per 100 patient-years) who received 5 mg twice daily of XELJANZ and 7 patients (06 events per 100 patient-years) who received 10 mg twice daily of XELJANZ The rate difference between XELJANZ doses (and the corresponding 95 confidence interval) was 02 (-04 07) events per 100 patient-years for 10 mg twice daily XELJANZ minus 5 mg twice daily XELJANZ One of these malignancies was a case of lymphoma that occurred during the 0 to 12 month period in a patient treated with XELJANZ 10 mg twice daily

The most common types of malignancy including malignancies observed during the long-term extension were lung and breast cancer followed by gastric colorectal renal cell prostate cancer lymphoma and malignant melanoma [see Warnings and Precautions (52)]

Laboratory Tests

Lymphocytes In the controlled clinical trials confirmed decreases in lymphocyte counts below 500 cellsmm3

occurred in 004 of patients for the 5 mg twice daily and 10 mg twice daily XELJANZ groups combined during the first 3 months of exposure

Confirmed lymphocyte counts less than 500 cellsmm3 were associated with an increased incidence of treated and serious infections [see Warnings and Precautions (54)]

Neutrophils In the controlled clinical trials confirmed decreases in ANC below 1000 cellsmm3 occurred in 007 of patients for the 5 mg twice daily and 10 mg twice daily XELJANZ groups combined during the first 3 months of exposure

There were no confirmed decreases in ANC below 500 cellsmm3 observed in any treatment group

There was no clear relationship between neutropenia and the occurrence of serious infections

In the long-term safety population the pattern and incidence of confirmed decreases in ANC remained consistent with what was seen in the controlled clinical trials [see Warnings and Precautions (54)]

Liver Enzyme Tests Confirmed increases in liver enzymes greater than 3 times the upper limit of normal (3x ULN) were observed in patients treated with XELJANZ In patients experiencing liver enzyme elevation modification of treatment regimen such as reduction in the dose of concomitant DMARD interruption of XELJANZ or reduction in XELJANZ dose resulted in decrease or normalization of liver enzymes

In the controlled monotherapy trials (0-3 months) no differences in the incidence of ALT or AST elevations were observed between the placebo and XELJANZ 5 mg and 10 mg twice daily groups

10

Reference ID 3213422

In the controlled background DMARD trials (0-3 months) ALT elevations greater than 3x ULN were observed in 10 13 and 12 of patients receiving placebo 5 mg and 10 mg twice daily respectively In these trials AST elevations greater than 3x ULN were observed in 06 05 and 04 of patients receiving placebo 5 mg and 10 mg twice daily respectively

One case of drug-induced liver injury was reported in a patient treated with XELJANZ 10 mg twice daily for approximately 25 months The patient developed symptomatic elevations of AST and ALT greater than 3x ULN and bilirubin elevations greater than 2x ULN which required hospitalizations and a liver biopsy

Lipids In the controlled clinical trials dose-related elevations in lipid parameters (total cholesterol LDL cholesterol HDL cholesterol triglycerides) were observed at one month of exposure and remained stable thereafter Changes in lipid parameters during the first 3 months of exposure in the controlled clinical trials are summarized below

bull Mean LDL cholesterol increased by 15 in the XELJANZ 5 mg twice daily arm and 19 in the XELJANZ 10 mg twice daily arm

bull Mean HDL cholesterol increased by 10 in the XELJANZ 5 mg twice daily arm and 12 in the XELJANZ 10 mg twice daily arm

bull Mean LDLHDL ratios were essentially unchanged in XELJANZ-treated patients

In a controlled clinical trial elevations in LDL cholesterol and ApoB decreased to pretreatment levels in response to statin therapy

In the long-term safety population elevations in lipid parameters remained consistent with what was seen in the controlled clinical trials

11

Reference ID 3213422

Serum Creatinine In the controlled clinical trials dose-related elevations in serum creatinine were observed with XELJANZ treatment The mean increase in serum creatinine was lt01 mgdL in the 12-month pooled safety analysis however with increasing duration of exposure in the long-term extensions up to 2 of patients were discontinued from XELJANZ treatment due to the protocol-specified discontinuation criterion of an increase in creatinine by more than 50 of baseline The clinical significance of the observed serum creatinine elevations is unknown

Other Adverse Reactions Adverse reactions occurring in 2 or more of patients on 5 mg twice daily or 10 mg twice daily XELJANZ and at least 1 greater than that observed in patients on placebo with or without DMARD are summarized in Table 4

Table 4 Adverse Reactions Occurring in at Least 2 or More of Patients on 5 or 10 mg Twice Daily XELJANZ With or Without DMARD (0-3 months) and at Least 1 Greater Than That Observed in Patients on Placebo

XELJANZ 5 mg Twice Daily

XELJANZ 10 mg Twice Daily

Placebo

Preferred Term N = 1336

() N = 1349

() N = 809

()

Diarrhea 40 29 23

Nasopharyngitis 38 28 28

Upper respiratory tract infection 45 38 33

Headache 43 34 21

Hypertension 16 23 11

N reflects randomized and treated patients from the seven clinical trials

Other adverse reactions occurring in controlled and open-label extension studies included

Blood and lymphatic system disorders Anemia Metabolism and nutrition disorders Dehydration Psychiatric disorders Insomnia Nervous system disorders Paresthesia Respiratory thoracic and mediastinal disorders Dyspnea cough sinus congestion Gastrointestinal disorders Abdominal pain dyspepsia vomiting gastritis nausea Hepatobiliary disorders Hepatic steatosis Skin and subcutaneous tissue disorders Rash erythema pruritus Musculoskeletal connective tissue and bone disorders Musculoskeletal pain arthralgia tendonitis joint swelling General disorders and administration site conditions Pyrexia fatigue peripheral edema

12

Reference ID 3213422

7 DRUG INTERACTIONS

71 Potent CYP3A4 Inhibitors Tofacitinib exposure is increased when XELJANZ is coadministered with potent inhibitors of cytochrome P450 (CYP) 3A4 (eg ketoconazole) [see Dosage and Administration (21) and Figure 3]

72 Moderate CYP3A4 and Potent CYP2C19 Inhibitors Tofacitinib exposure is increased when XELJANZ is coadministered with medications that result in both moderate inhibition of CYP3A4 and potent inhibition of CYP2C19 (eg fluconazole) [see Dosage and Administration (21) and Figure 3]

73 Potent CYP3A4 Inducers Tofacitinib exposure is decreased when XELJANZ is coadministered with potent CYP3A4 inducers (eg rifampin) [see Dosage and Administration (21) and Figure 3]

74 Immunosuppressive Drugs There is a risk of added immunosuppression when XELJANZ is coadministered with potent immunosuppressive drugs (eg azathioprine tacrolimus cyclosporine) Combined use of multiple-dose XELJANZ with potent immunosuppressives has not been studied in rheumatoid arthritis

8 USE IN SPECIFIC POPULATIONS

81 Pregnancy Teratogenic effects Pregnancy Category C There are no adequate and well-controlled studies in pregnant women XELJANZ should be used during pregnancy only if the potential benefit justifies the potential risk to the fetus Tofacitinib has been shown to be fetocidal and teratogenic in rats and rabbits when given at exposures 146 times and 13 times respectively the maximum recommended human dose (MRHD)

In a rat embryofetal developmental study tofacitinib was teratogenic at exposure levels approximately 146 times the MRHD (on an AUC basis at oral doses of 100 mgkgday) Teratogenic effects consisted of external and soft tissue malformations of anasarca and membranous ventricular septal defects respectively and skeletal malformations or variations (absent cervical arch bent femur fibula humerus radius scapula tibia and ulna sternoschisis absent rib misshapen femur branched rib fused rib fused sternebra and hemicentric thoracic centrum) In addition there was an increase in post-implantation loss consisting of early and late resorptions resulting in a reduced number of viable fetuses Mean fetal body weight was reduced No developmental toxicity was observed in rats at exposure levels approximately 58 times the MRHD (on an AUC basis at oral doses of 30 mgkgday) In the rabbit embryofetal developmental study tofacitinib was teratogenic at exposure levels approximately 13 times the MRHD (on an AUC basis at oral doses of 30 mgkgday) in the absence of signs of maternal toxicity Teratogenic effects included thoracogastroschisis omphalocele membranous ventricular septal defects and cranialskeletal malformations (microstomia microphthalmia)

13

Reference ID 3213422

mid-line and tail defects In addition there was an increase in post-implantation loss associated with late resorptions No developmental toxicity was observed in rabbits at exposure levels approximately 3 times the MRHD (on an AUC basis at oral doses of 10 mgkgday)

Nonteratogenic effects In a peri- and postnatal rat study there were reductions in live litter size postnatal survival and pup body weights at exposure levels approximately 73 times the MRHD (on an AUC basis at oral doses of 50 mgkgday) There was no effect on behavioral and learning assessments sexual maturation or the ability of the F1 generation rats to mate and produce viable F2 generation fetuses in rats at exposure levels approximately 17 times the MRHD (on an AUC basis at oral doses of 10 mgkgday)

Pregnancy Registry To monitor the outcomes of pregnant women exposed to XELJANZ a pregnancy registry has been established Physicians are encouraged to register patients and pregnant women are encouraged to register themselves by calling 1-877-311-8972

83 Nursing Mothers Tofacitinib was secreted in milk of lactating rats It is not known whether tofacitinib is excreted in human milk Because many drugs are excreted in human milk and because of the potential for serious adverse reactions in nursing infants from tofacitinib a decision should be made whether to discontinue nursing or to discontinue the drug taking into account the importance of the drug for the mother

84 Pediatric Use The safety and effectiveness of XELJANZ in pediatric patients have not been established

85 Geriatric Use Of the 3315 patients who enrolled in Studies I to V a total of 505 rheumatoid arthritis patients were 65 years of age and older including 71 patients 75 years and older The frequency of serious infection among XELJANZ-treated subjects 65 years of age and older was higher than among those under the age of 65 As there is a higher incidence of infections in the elderly population in general caution should be used when treating the elderly

86 Hepatic Impairment No dose adjustment is required in patients with mild hepatic impairment XELJANZ dose should be reduced to 5 mg once daily in patients with moderate hepatic impairment The safety and efficacy of XELJANZ have not been studied in patients with severe hepatic impairment or in patients with positive hepatitis B virus or hepatitis C virus serology [see Dosage and Administration (21) and Warnings and Precautions (56)]

87 Renal Impairment No dose adjustment is required in patients with mild renal impairment XELJANZ dose should be reduced to 5 mg once daily in patients with moderate and severe renal impairment [see Dosage and Administration (21)] In clinical trials XELJANZ was not evaluated in rheumatoid arthritis patients with baseline creatinine clearance values (estimated by the Cockroft-Gault equation) less than 40 mLmin

14

Reference ID 3213422

10 OVERDOSAGE Signs Symptoms and Laboratory Findings of Acute Overdosage in Humans There is no experience with overdose of XELJANZ

Treatment or Management of Overdose Pharmacokinetic data up to and including a single dose of 100 mg in healthy volunteers indicate that more than 95 of the administered dose is expected to be eliminated within 24 hours

There is no specific antidote for overdose with XELJANZ In case of an overdose it is recommended that the patient be monitored for signs and symptoms of adverse reactions Patients who develop adverse reactions should receive appropriate treatment

11 DESCRIPTION XELJANZ is the citrate salt of tofacitinib a JAK inhibitor

Tofacitinib citrate is a white to off-white powder with the following chemical name (3R4R)-4shymethyl-3-(methyl-7H-pyrrolo [23-d]pyrimidin-4-ylamino)-szlig-oxo-1-piperidinepropanenitrile 2shyhydroxy-123-propanetricarboxylate (11) It is freely soluble in water

Tofacitinib citrate has a molecular weight of 5045 Daltons (or 3124 Daltons as the tofacitinib free base) and a molecular formula of C16H20N6ObullC6H8O7 The chemical structure of tofacitinib citrate is

NN

Me

Me

N

N N H

O N

HO2C CO2H

HO2C

OH bull

XELJANZ is supplied for oral administration as 5 mg tofacitinib (equivalent to 8 mg tofacitinib citrate) white round immediate-release film-coated tablet Each tablet of XELJANZ contains the appropriate amount of XELJANZ as a citrate salt and the following inactive ingredients microcrystalline cellulose lactose monohydrate croscarmellose sodium magnesium stearate HPMC 2910Hypromellose 6cP titanium dioxide macrogolPEG3350 and triacetin

12 CLINICAL PHARMACOLOGY

121 Mechanism of Action Tofacitinib is a Janus kinase (JAK) inhibitor JAKs are intracellular enzymes which transmit signals arising from cytokine or growth factor-receptor interactions on the cellular membrane to influence cellular processes of hematopoiesis and immune cell function Within the signaling pathway JAKs phosphorylate and activate Signal Transducers and Activators of Transcription (STATs) which modulate intracellular activity including gene expression Tofacitinib modulates

15

Reference ID 3213422

the signaling pathway at the point of JAKs preventing the phosphorylation and activation of STATs JAK enzymes transmit cytokine signaling through pairing of JAKs (eg JAK1JAK3 JAK1JAK2 JAK1TyK2 JAK2JAK2) Tofacitinib inhibited the in vitro activities of JAK1JAK2 JAK1JAK3 and JAK2JAK2 combinations with IC50 of 406 56 and 1377 nM respectively However the relevance of specific JAK combinations to therapeutic effectiveness is not known

122 Pharmacodynamics Treatment with XELJANZ was associated with dose-dependent reductions of circulating CD1656+ natural killer cells with estimated maximum reductions occurring at approximately 8shy10 weeks after initiation of therapy These changes generally resolved within 2-6 weeks after discontinuation of treatment Treatment with XELJANZ was associated with dose-dependent increases in B cell counts Changes in circulating T-lymphocyte counts and T-lymphocyte subsets (CD3+ CD4+ and CD8+) were small and inconsistent The clinical significance of these changes is unknown

Total serum IgG IgM and IgA levels after 6-month dosing in patients with rheumatoid arthritis were lower than placebo however changes were small and not dose-dependent

After treatment with XELJANZ in patients with rheumatoid arthritis rapid decreases in serum C-reactive protein (CRP) were observed and maintained throughout dosing Changes in CRP observed with XELJANZ treatment do not reverse fully within 2 weeks after discontinuation indicating a longer duration of pharmacodynamic activity compared to the pharmacokinetic half-life

123 Pharmacokinetics Following oral administration of XELJANZ peak plasma concentrations are reached within 05shy1 hour elimination half-life is ~3 hours and a dose-proportional increase in systemic exposure was observed in the therapeutic dose range Steady state concentrations are achieved in 24-48 hours with negligible accumulation after twice daily administration

Absorption The absolute oral bioavailability of tofacitinib is 74 Coadministration of XELJANZ with a high-fat meal resulted in no changes in AUC while Cmax was reduced by 32 In clinical trials XELJANZ was administered without regard to meals

Distribution After intravenous administration the volume of distribution is 87 L The protein binding of tofacitinib is ~40 Tofacitinib binds predominantly to albumin and does not appear to bind to 1-acid glycoprotein Tofacitinib distributes equally between red blood cells and plasma

Metabolism and Elimination Clearance mechanisms for tofacitinib are approximately 70 hepatic metabolism and 30 renal excretion of the parent drug The metabolism of tofacitinib is primarily mediated by CYP3A4 with minor contribution from CYP2C19 In a human radiolabeled study more than 65 of the total circulating radioactivity was accounted for by unchanged tofacitinib with the remaining

16

Reference ID 3213422

35 attributed to 8 metabolites each accounting for less than 8 of total radioactivity The pharmacologic activity of tofacitinib is attributed to the parent molecule

Pharmacokinetics in Rheumatoid Arthritis Patients Population PK analysis in rheumatoid arthritis patients indicated no clinically relevant change in tofacitinib exposure after accounting for differences in renal function (ie creatinine clearance) between patients based on age weight gender and race (Figure 1) An approximately linear relationship between body weight and volume of distribution was observed resulting in higher peak (Cmax) and lower trough (Cmin) concentrations in lighter patients However this difference is not considered to be clinically relevant The between-subject variability ( coefficient of variation) in AUC of tofacitinib is estimated to be approximately 27

Specific Populations The effect of renal and hepatic impairment and other intrinsic factors on the pharmacokinetics of tofacitinib is shown in Figure 1

17

Reference ID 3213422

Figure 1 Impact of Intrinsic Factors on Tofacitinib Pharmacokinetics

Intrinsic Factor

Weight = 40 kg

Weight = 140 kg

Age = 80 years

Female

Asian

Black

Hispanic

Renal Impairment (Mild)

Renal Impairment (Moderate)

Renal Impairment (Severe)

Hepatic Impairment (Mild)

Hepatic Impairment (Moderate)

PK

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

0

Ratio and 90 CI Recommendation

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

Reduce Dose to 5 mg Once Daily

Reduce Dose to 5 mg Once Daily

No Dose Adjustment

Reduce Dose to 5 mg Once Daily

05 1 15 2 25 3 35 4

Ratio relative to reference

Supplemental doses are not necessary in patients after dialysis

Reference values for weight age gender and race comparisons are 70 kg 55 years male and White respectively Reference groups for renal and hepatic impairment data are subjects with normal renal and hepatic function

Drug Interactions

Potential for XELJANZ to Influence the PK of Other Drugs In vitro studies indicate that tofacitinib does not significantly inhibit or induce the activity of the

18

Reference ID 3213422

major human drug-metabolizing CYPs (CYP1A2 CYP2B6 CYP2C8 CYP2C9 CYP2C19 CYP2D6 and CYP3A4) at concentrations exceeding 185 times the steady state Cmax of a 5 mg twice daily dose These in vitro results were confirmed by a human drug interaction study showing no changes in the PK of midazolam a highly sensitive CYP3A4 substrate when coadministered with XELJANZ

In rheumatoid arthritis patients the oral clearance of tofacitinib does not vary with time indicating that tofacitinib does not normalize CYP enzyme activity in rheumatoid arthritis patients Therefore coadministration with XELJANZ is not expected to result in clinically relevant increases in the metabolism of CYP substrates in rheumatoid arthritis patients

In vitro data indicate that the potential for tofacitinib to inhibit transporters such as Pshyglycoprotein organic anionic or cationic transporters at therapeutic concentrations is low

Dosing recommendations for coadministered drugs following administration with XELJANZ are shown in Figure 2

Figure 2 Impact of XELJANZ on PK of Other Drugs

Coadministered PK Drug

Methotrexate AUC

Cmax

CYP3A Substrate AUC Midazolam

Cmax

Oral ContraceptivesLevonorgestrel

AUC

Cmax

Ethinyl Estradiol AUC

Cmax

OCT amp MATE Substrate AUC Metformin

Cmax

Ratio and 90 CI Recommendation

No Dose Adjustment

No dose adjustment for CYP3A substrates such as midazolam

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

0 025 05 075 1 125 15 175 2

Ratio relative to reference

Note Reference group is administration of concomitant medication alone OCT = Organic Cationic Transporter MATE = Multidrug and Toxic Compound Extrusion

Potential for Other Drugs to Influence the PK of Tofacitinib Since tofacitinib is metabolized by CYP3A4 interaction with drugs that inhibit or induce CYP3A4 is likely Inhibitors of CYP2C19 alone or P-glycoprotein are unlikely to substantially alter the PK of tofacitinib Dosing recommendations for XELJANZ for administration with CYP inhibitors or inducers are shown in Figure 3

19

Reference ID 3213422

Figure 3 Impact of Other Drugs on PK of XELJANZ

Coadministered PK Drug

CYP3A Inhib itor AUC Ketoconazole

Cmax

CYP3A amp CYP2C19 Inhib itor AUC

Cmax Fluconazole

CYP Inducer Rifampin AUC

Cmax

Methotrexate AUC

Cmax

Tacrolimus AUC Cmax

Cyclosporine AUC

Cmax

Ratio and 90 CI Recommendation

Reduce XELJANZ Dose to 5 mg Once Daily

Reduce XELJANZ Dose to 5 mg Once Daily

May Decrease Efficacy

No Dose Adjustment

There is a risk of added immunosuppressionif XELJANZ is taken with Tacrolimus

There is a risk of added immunosuppressionif XELJANZ is taken with Cyclosporine

0 05 1 15 2 25

Ratio relative to reference

Note Reference group is administration of tofacitinib alone

13 NONCLINICAL TOXICOLOGY

131 Carcinogenesis Mutagenesis Impairment of Fertility In a 39-week toxicology study in monkeys tofacitinib at exposure levels approximately 6 times the MRHD (on an AUC basis at oral doses of 5 mgkg twice daily) produced lymphomas No lymphomas were observed in this study at exposure levels 1 times the MRHD (on an AUC basis at oral doses of 1 mgkg twice daily)

The carcinogenic potential of tofacitinib was assessed in 6-month rasH2 transgenic mouse carcinogenicity and 2-year rat carcinogenicity studies Tofacitinib at exposure levels approximately 34 times the MRHD (on an AUC basis at oral doses of 200 mgkgday) was not carcinogenic in mice

In the 24-month oral carcinogenicity study in Sprague-Dawley rats tofacitinib caused benign Leydig cell tumors hibernomas (malignancy of brown adipose tissue) and benign thymomas at doses greater than or equal to 30 mgkgday (approximately 42 times the exposure levels at the MRHD on an AUC basis) The relevance of benign Leydig cell tumors to human risk is not known

20

Reference ID 3213422

Tofacitinib was not mutagenic in the bacterial reverse mutation assay It was positive for clastogenicity in the in vitro chromosome aberration assay with human lymphocytes in the presence of metabolic enzymes but negative in the absence of metabolic enzymes Tofacitinib was negative in the in vivo rat micronucleus assay and in the in vitro CHO-HGPRT assay and the in vivo rat hepatocyte unscheduled DNA synthesis assay

In rats tofacitinib at exposure levels approximately 17 times the MRHD (on an AUC basis at oral doses of 10 mgkgday) reduced female fertility due to increased post-implantation loss There was no impairment of female rat fertility at exposure levels of tofacitinib equal to the MRHD (on an AUC basis at oral doses of 1 mgkgday) Tofacitinib exposure levels at approximately 133 times the MRHD (on an AUC basis at oral doses of 100 mgkgday) had no effect on male fertility sperm motility or sperm concentration

14 CLINICAL STUDIES The XELJANZ clinical development program included two dose-ranging trials and five confirmatory trials

DOSE-RANGING TRIALS Dose selection for XELJANZ was based on two pivotal dose-ranging trials

Dose-Ranging Study 1 was a 6-month monotherapy trial in 384 patients with active rheumatoid arthritis who had an inadequate response to a DMARD Patients who previously received adalimumab therapy were excluded Patients were randomized to 1 of 7 monotherapy treatments XELJANZ 1 3 5 10 or 15 mg twice daily adalimumab 40 mg subcutaneously every other week for 10 weeks followed by XELJANZ 5 mg twice daily for 3 months or placebo

Dose-Ranging Study 2 was a 6-month trial in which 507 patients with active rheumatoid arthritis who had an inadequate response to MTX alone received one of 6 dose regimens of XELJANZ (20 mg once daily 1 3 5 10 or 15 mg twice daily) or placebo added to background MTX

The results of XELJANZ-treated patients achieving ACR20 responses in Studies 1 and 2 are shown in Figure 4 Although a dose-response relationship was observed in Study 1 the proportion of patients with an ACR20 response did not clearly differ between the 10 mg and 15 mg doses Furthermore there was a smaller proportion of patients who responded to adalimumab monotherapy compared to those treated with XELJANZ doses 3 mg twice daily and greater In Study 2 a smaller proportion of patients achieved an ACR20 response in the placebo and XELJANZ 1 mg groups compared to patients treated with the other XELJANZ doses However there was no difference in the proportion of responders among patients treated with XELJANZ 3 5 10 15 mg twice daily or 20 mg once daily doses

21

Reference ID 3213422

Figure 4 Proportion of Patients with ACR20 Response at Month 3 in Dose-Ranging Studies 1 and 2

CONFIRMATORY TRIALS Study I was a 6-month monotherapy trial in which 610 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to a DMARD (nonbiologic or biologic) received XELJANZ 5 or 10 mg twice daily or placebo At the Month 3 visit all patients randomized to placebo treatment were advanced in a blinded fashion to a second predetermined treatment of XELJANZ 5 or 10 mg twice daily The primary endpoints at Month 3 were the proportion of patients who achieved an ACR20 response changes in Health Assessment Questionnaire ndash Disability Index (HAQ-DI) and rates of Disease Activity Score DAS28-4(ESR) less than 26

Study II was a 12-month trial in which 792 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to a nonbiologic DMARD received XELJANZ 5 or 10 mg twice daily or placebo added to background DMARD treatment (excluding potent immunosuppressive treatments such as azathioprine or cyclosporine) At the Month 3 visit nonresponding patients were advanced in a blinded fashion to a second predetermined treatment of XELJANZ 5 or 10 mg twice daily At the end of Month 6 all placebo patients were advanced to their second predetermined treatment in a blinded fashion The primary endpoints were the proportion of patients who achieved an ACR20 response at Month 6 changes in HAQ-DI at Month 3 and rates of DAS28-4(ESR) less than 26 at Month 6

Study III was a 12-month trial in 717 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to MTX Patients received XELJANZ 5 or 10 mg twice daily adalimumab 40 mg subcutaneously every other week or placebo added to background MTX

22

Reference ID 3213422

Placebo patients were advanced as in Study II The primary endpoints were the proportion of patients who achieved an ACR20 response at Month 6 HAQ-DI at Month 3 and DAS28-4(ESR) less than 26 at Month 6

Study IV is an ongoing 2-year trial with a planned analysis at 1 year in which 797 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to MTX received XELJANZ 5 or 10 mg twice daily or placebo added to background MTX Placebo patients were advanced as in Study II The primary endpoints were the proportion of patients who achieved an ACR20 response at Month 6 mean change from baseline in van der Heijde-modified total Sharp Score (mTSS) at Month 6 HAQ-DI at Month 3 and DAS28-4(ESR) less than 26 at Month 6

Study V was a 6-month trial in which 399 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to at least one approved TNF-inhibiting biologic agent received XELJANZ 5 or 10 mg twice daily or placebo added to background MTX At the Month 3 visit all patients randomized to placebo treatment were advanced in a blinded fashion to a second predetermined treatment of XELJANZ 5 or 10 mg twice daily The primary endpoints at Month 3 were the proportion of patients who achieved an ACR20 response HAQ-DI and DAS28-4(ESR) less than 26

Clinical Response The percentages of XELJANZ-treated patients achieving ACR20 ACR50 and ACR70 responses in Studies I IV and V are shown in Table 5 Similar results were observed with Studies II and III In all trials patients treated with either 5 or 10 mg twice daily XELJANZ had higher ACR20 ACR50 and ACR70 response rates versus placebo with or without background DMARD treatment at Month 3 and Month 6 Higher ACR20 response rates were observed within 2 weeks compared to placebo In the 12-month trials ACR response rates in XELJANZ-treated patients were consistent at 6 and 12 months

23

Reference ID 3213422

Table 5 Proportion of Patients with an ACR Response Percent of Patients

Monotherapy in Nonbiologic or Biologic DMARD Inadequate

Respondersc

MTX Inadequate Respondersd TNF Inhibitor Inadequate Responderse

Study I Study IV Study V

Na PBO

122

XELJANZ 5 mg Twice

Daily

243

XELJANZ 10 mg Twice Daily

245

PBO + MTX

160

XELJANZ 5 mg Twice

Daily + MTX

321

XELJANZ 10 mg Twice

Daily + MTX

316

PBO +

MTX

132

XELJANZ 5 mg Twice

Daily + MTX

133

XELJANZ 10 mg Twice

Daily + MTX

134 ACR20 Month 3 Month 6

26 NAb

59 69

65 70

27 25

55 50

67 62

24 NA

41 51

48 54

ACR50 Month 3 Month 6

12 NA

31 42

36 46

8 9

29 32

37 44

8 NA

26 37

28 30

ACR70 Month 3 Month 6

6 NA

15 22

20 29

3 1

11 14

17 23

2 NA

14 16

10 16

a N is number of randomized and treated patients b NA Not applicable as data for placebo treatment is not available beyond 3 months in Studies I and V due to placebo advancement c Inadequate response to at least one DMARD (biologic or nonbiologic) due to lack of efficacy or toxicity d Inadequate response to MTX defined as the presence of sufficient residual disease activity to meet the entry criteria e Inadequate response to a least one TNF inhibitor due to lack of efficacy andor intolerance

In Study IV a greater proportion of patients treated with XELJANZ 5 mg or 10 mg twice daily plus MTX achieved a low level of disease activity as measured by a DAS28-4(ESR) less than 26 at 6 months compared to those treated with MTX alone (Table 6)

24

Reference ID 3213422

Table 6 Proportion of Patients with DAS28-4(ESR) Less Than 26 with Number of Residual Active Joints Study IV DAS28-4(ESR) Less Than 26 Placebo + MTX

160

XELJANZ 5 mg Twice Daily + MTX

321

XELJANZ 10 mg Twice Daily + MTX

316 Proportion of responders at Month 6 (n) 1 (2) 6 (19) 13 (42)

Of responders proportion with 0 active joints (n)

50 (1) 42 (8) 36 (15)

Of responders proportion with 1 active joint (n) 0 5 (1) 17 (7) Of responders proportion with 2 active joints (n)

0 32 (6) 7 (3)

Of responders proportion with 3 or more active joints (n)

50 (1) 21 (4) 40 (17)

The results of the components of the ACR response criteria for Study IV are shown in Table 7 Similar results were observed in Studies I II III and V

Table 7 Components of ACR Response at 3 Months Study IV

XELJANZ

5 mg

Twice Daily + MTX

N=321

XELJANZ

10 mg

Twice Daily + MTX

N=316

Placebo + MTX

N=160

Component (mean) a Baseline Month 3a Baseline Month 3a Baseline Month 3a

Number of tender

joints 24 13 23 10 23 18

(0-68) (14) (14) (15) (12) (13) (14)

Number of swollen

joints 14 6 14 6 14 10

(0-66) (8) (8) (8) (7) (9) (9)

Painb 58

(23)

34

(23)

58

(24)

29

(22)

55

(24)

47

(24)

Patient global

assessmentb

58

(24)

35

(23)

57

(23)

29

(20)

54

(23)

47

(24)

Disability index

(HAQ-DI)c 141 099 140 084 132 119

(068) (065) (066) (064) (067) (068)

25

Reference ID 3213422

Physician global

assessmentb 59 30 58 24 56 43

(16) (19) (17) (17) (18) (22)

CRP (mgL) 153 71 171 44 137 146

(190) (191) (269) (86) (149) (187) aData shown is mean (Standard Deviation) at Month 3bVisual analog scale 0 = best 100 = worst cHealth Assessment Questionnaire Disability Index 0 = best 3 = worst 20 questions categories dressing and grooming arising eating walking hygiene reach grip and activities

The percent of ACR20 responders by visit for Study IV is shown in Figure 5 Similar responses were observed in Studies I II III and V

Figure 5 Percentage of ACR20 Responders by Visit for Study IV

Physical Function Response Improvement in physical functioning was measured by the HAQ-DI Patients receiving XELJANZ 5 and 10 mg twice daily demonstrated greater improvement from baseline in physical functioning compared to placebo at Month 3

The mean (95 CI) difference from placebo in HAQ-DI improvement from baseline at Month 3 in Study III was -022 (-035 -010) in patients receiving 5 mg XELJANZ twice daily and -032 (-044 -019) in patients receiving 10 mg XELJANZ twice daily Similar results were obtained in

26

Reference ID 3213422

Studies I II IV and V In the 12-month trials HAQ-DI results in XELJANZ-treated patients were consistent at 6 and 12 months

16 HOW SUPPLIEDSTORAGE AND HANDLING XELJANZ is provided as 5 mg tofacitinib (equivalent to 8 mg tofacitinib citrate) tablets White round immediate-release film-coated tablets debossed with ldquoPfizerrdquo on one side and ldquoJKI 5rdquo on the other side and available in

Bottles of 60 NDC 0069-1001-01 Bottles of 180 NDC 0069-1001-02

Storage and Handling Store at 20degC to 25degC (68degF to 77degF) [See USP Controlled Room Temperature]

Do not repackage

17 PATIENT COUNSELING INFORMATION See FDA-approved patient labeling (Medication Guide)

Inform patients of the availability of a Medication Guide and instruct them to read the Medication Guide prior to taking XELJANZ Instruct patients to take XELJANZ only as prescribed

This productrsquos label may have been updated For current full prescribing information please visit wwwpfizercom

LAB-0445-10

27

Reference ID 3213422

MEDICATION GUIDE

XELJANZ (ZELrsquo JANSrsquo) (tofacitinib)

Read this Medication Guide before you start taking XELJANZ and each time you get a refill There may be new information This Medication Guide does not take the place of talking to your healthcare provider about your medical condition or treatment

What is the most important information I should know about XELJANZ XELJANZ may cause serious side effects including

1 Serious infections

XELJANZ is a medicine that affects your immune system XELJANZ can lower the ability of your immune system to fight infections Some people have serious infections while taking XELJANZ including tuberculosis (TB) and infections caused by bacteria fungi or viruses that can spread throughout the body Some people have died from these infections Your healthcare provider should test you for TB before starting XELJANZ Your healthcare provider should monitor you closely for signs and symptoms of

TB infection during treatment with XELJANZ

You should not start taking XELJANZ if you have any kind of infection unless your healthcare provider tells you it is okay

Before starting XELJANZ tell your healthcare provider if you think you have an infection or have symptoms of an infection such as

o fever sweating or chills o warm red or painful skin o muscle aches or sores on your body o cough o diarrhea or stomach pain o shortness of breath o burning when you urinate o blood in phlegm or urinating more often o weight loss than normal

o feeling very tired are being treated for an infection get a lot of infections or have infections that keep coming back have diabetes HIV or a weak immune system People with these conditions

have a higher chance for infections have TB or have been in close contact with someone with TB live or have lived or have traveled to certain parts of the country (such as the

Ohio and Mississippi River valleys and the Southwest) where there is an increased chance for getting certain kinds of fungal infections (histoplasmosis coccidioidomycosis or blastomycosis) These infections may happen or become more severe if you use XELJANZ Ask your healthcare provider if you do not know if you have lived in an area where these infections are common

have or have had hepatitis B or C

28

Reference ID 3213422

After starting XELJANZ call your healthcare provider right away if you have any symptoms of an infection XELJANZ can make you more likely to get infections or make worse any infection that you have

2 Cancer and immune system problems

XELJANZ may increase your risk of certain cancers by changing the way your immune system works

Lymphoma and other cancers can happen in patients taking XELJANZ Tell your healthcare provider if you have ever had any type of cancer

Some people who have taken XELJANZ with certain other medicines to prevent kidney transplant rejection have had a problem with certain white blood cells growing out of control (Epstein Barr Virus-associated post transplant lymphoproliferative disorder)

3 Tears (perforation) in the stomach or intestines

Tell your healthcare provider if you have had diverticulitis (inflammation in parts of the large intestine) or ulcers in your stomach or intestines Some people taking XELJANZ get tears in their stomach or intestine This happens most often in people who also take nonsteroidal anti-inflammatory drugs (NSAIDs) corticosteroids or methotrexate

Tell your healthcare provider right away if you have fever and stomach-area pain that does not go away and a change in your bowel habits

4 Changes in certain laboratory test results Your healthcare provider should do blood tests before you start receiving XELJANZ and while you take XELJANZ to check for the following side effects

changes in lymphocyte counts Lymphocytes are white blood cells that help the body fight off infections

low neutrophil counts Neutrophils are white blood cells that help the body fight off infections

low red blood cell count This may mean that you have anemia which may make you feel weak and tired

Your healthcare provider should routinely check certain liver tests

You should not receive XELJANZ if your lymphocyte count neutrophil count or red blood cell count is too low or your liver tests are too high

Your healthcare provider may stop your XELJANZ treatment for a period of time if needed because of changes in these blood test results

29

Reference ID 3213422

You may also have changes in other laboratory tests such as your blood cholesterol levels Your healthcare provider should do blood tests to check your cholesterol levels 4 to 8 weeks after you start receiving XELJANZ and as needed after that Normal cholesterol levels are important to good heart health

See ldquoWhat are the possible side effects of XELJANZrdquo for more information about side effects

What is XELJANZ

XELJANZ is a prescription medicine called a Janus kinase (JAK) inhibitor XELJANZ is used to treat adults with moderately to severely active rheumatoid arthritis in which methotrexate did not work well

It is not known if XELJANZ is safe and effective in people with Hepatitis B or C

XELJANZ is not for people with severe liver problems

It is not known if XELJANZ is safe and effective in children

What should I tell my healthcare provider before taking XELJANZ

XELJANZ may not be right for you Before taking XELJANZ tell your healthcare provider if you have an infection See ldquoWhat is the most important information I should know

about XELJANZrdquo have liver problems have kidney problems have any stomach area (abdominal) pain or been diagnosed with diverticulitis or

ulcers in your stomach or intestines have had a reaction to tofacitinib or any of the ingredients in XELJANZ have recently received or are scheduled to receive a vaccine People who take

XELJANZ should not receive live vaccines People taking XELJANZ can receive non-live vaccines

have any other medical conditions plan to become pregnant or are pregnant It is not known if XELJANZ will harm

an unborn baby

Pregnancy Registry Pfizer has a registry for pregnant women who take XELJANZ The purpose of this registry is to check the health of the pregnant mother and her baby If you are pregnant or become pregnant while taking XELJANZ talk to your healthcare provider about how you can join this pregnancy registry or you may contact the registry at 1-877-311-8972 to enroll

plan to breastfeed or are breastfeeding You and your healthcare provider should decide if you will take XELJANZ or breastfeed You should not do both

30

Reference ID 3213422

Tell your healthcare provider about all the medicines you take including prescription and non-prescription medicines vitamins and herbal supplements XELJANZ and other medicines may affect each other causing side effects

Especially tell your healthcare provider if you take any other medicines to treat your rheumatoid arthritis You should not take

tocilizumab (Actemrareg) etanercept (Enbrelreg) adalimumab (Humirareg) infliximab (Remicadereg) rituximab (Rituxanreg) abatacept (Orenciareg) anakinra (Kineretreg) certolizumab (Cimziareg) golimumab (Simponireg) azathioprine cyclosporine or other immunosuppressive drugs while you are taking XELJANZ Taking XELJANZ with these medicines may increase your risk of infection

medicines that affect the way certain liver enzymes work Ask your healthcare provider if you are not sure if your medicine is one of these

Know the medicines you take Keep a list of them to show your healthcare provider and pharmacist when you get a new medicine

How should I take XELJANZ

Take XELJANZ as your healthcare provider tells you to take it

Take XELJANZ 2 times a day with or without food

If you take too much XELJANZ call your healthcare provider or go the nearest hospital emergency room right away

What are possible side effects of XELJANZ

XELJANZ may cause serious side effects including

See ldquoWhat is the most important information I should know about XELJANZrdquo

Hepatitis B or C activation infection in people who carry the virus in their blood If you are a carrier of the hepatitis B or C virus (viruses that affect the liver) the virus may become active while you use XELJANZ Your healthcare provider may do blood tests before you start treatment with XELJANZ and while you are using XELJANZ Tell your healthcare provider if you have any of the following symptoms of a possible hepatitis B or C infection

o feel very tired o fevers o skin or eyes look yellow o chills o little or no appetite o stomach discomfort o vomiting o muscle aches o clay-colored bowel o dark urine

movements o skin rash

31

Reference ID 3213422

Common side effects of XELJANZ include upper respiratory tract infections (common cold sinus infections) headache diarrhea nasal congestion sore throat and runny nose (nasopharyngitis)

Tell your healthcare provider if you have any side effect that bothers you or that does not go away

These are not all the possible side effects of XELJANZ For more information ask your healthcare provider or pharmacist

Call your doctor for medical advice about side effects You may report side effects to FDA at 1-800-FDA-1088

You may also report side effects to Pfizer at 1-800-438-1985

How should I store XELJANZ

Store XELJANZ at 68degF to 77degF (room temperature)

Safely throw away medicine that is out of date or no longer needed

Keep XELJANZ and all medicines out of the reach of children

General information about the safe and effective use of XELJANZ

Medicines are sometimes prescribed for purposes other than those listed in a Medication Guide Do not use XELJANZ for a condition for which it was not prescribed Do not give XELJANZ to other people even if they have the same symptoms you have It may harm them

This Medication Guide summarizes the most important information about XELJANZ If you would like more information talk to your healthcare provider You can ask your pharmacist or healthcare provider for information about XELJANZ that is written for health professionals

What are the ingredients in XELJANZ

Active ingredient tofacitinib citrate

Inactive ingredients microcrystalline cellulose lactose monohydrate croscarmellose sodium magnesium stearate HPMC 2910Hypromellose 6cP titanium dioxide macrogolPEG3350 and triacetin

32

Reference ID 3213422

This Medication Guide has been approved by the US Food and Drug Administration

LAB-0535-10 Issued November 2012

33

Reference ID 3213422

Serious Infections In the seven controlled trials during the 0 to 3 months exposure serious infections were reported in 1 patient (05 events per 100 patient-years) who received placebo and 11 patients (17 events per 100 patient-years) who received XELJANZ 5 mg or 10 mg twice daily The rate difference between treatment groups (and the corresponding 95 confidence interval) was 11 (-04 25) events per 100 patient-years for the combined 5 mg twice daily and 10 mg twice daily XELJANZ group minus placebo

In the seven controlled trials during the 0 to 12 months exposure serious infections were reported in 34 patients (27 events per 100 patient-years) who received 5 mg twice daily of XELJANZ and 33 patients (27 events per 100 patient-years) who received 10 mg twice daily of XELJANZ The rate difference between XELJANZ doses (and the corresponding 95 confidence interval) was -01 (-13 12) events per 100 patient-years for 10 mg twice daily XELJANZ minus 5 mg twice daily XELJANZ

The most common serious infections included pneumonia cellulitis herpes zoster and urinary tract infection [see Warnings and Precautions (51)]

Tuberculosis In the seven controlled trials during the 0 to 3 months exposure tuberculosis was not reported in patients who received placebo 5 mg twice daily of XELJANZ or 10 mg twice daily of XELJANZ

In the seven controlled trials during the 0 to 12 months exposure tuberculosis was reported in 0 patients who received 5 mg twice daily of XELJANZ and 6 patients (05 events per 100 patient-years) who received 10 mg twice daily of XELJANZ The rate difference between XELJANZ doses (and the corresponding 95 confidence interval) was 05 (01 09) events per 100 patient-years for 10 mg twice daily XELJANZ minus 5 mg twice daily XELJANZ

Cases of disseminated tuberculosis were also reported The median XELJANZ exposure prior to diagnosis of tuberculosis was 10 months (range from 152 to 960 days) [see Warnings and Precautions (51)]

Opportunistic Infections (excluding tuberculosis) In the seven controlled trials during the 0 to 3 months exposure opportunistic infections were not reported in patients who received placebo 5 mg twice daily of XELJANZ or 10 mg twice daily of XELJANZ

In the seven controlled trials during the 0 to 12 months exposure opportunistic infections were reported in 4 patients (03 events per 100 patient-years) who received 5 mg twice daily of XELJANZ and 4 patients (03 events per 100 patient-years) who received 10 mg twice daily of XELJANZ The rate difference between XELJANZ doses (and the corresponding 95 confidence interval) was 0 (-05 05) events per 100 patient-years for 10 mg twice daily XELJANZ minus 5 mg twice daily XELJANZ

The median XELJANZ exposure prior to diagnosis of an opportunistic infection was 8 months (range from 41 to 698 days) [see Warnings and Precautions (51)]

Malignancy In the seven controlled trials during the 0 to 3 months exposure malignancies excluding NMSC were reported in 0 patients who received placebo and 2 patients (03 events per 100 patientshy

9

Reference ID 3213422

years) who received either XELJANZ 5 mg or 10 mg twice daily The rate difference between treatment groups (and the corresponding 95 confidence interval) was 03 (-01 07) events per 100 patient-years for the combined 5 mg and 10 mg twice daily XELJANZ group minus placebo

In the seven controlled trials during the 0 to 12 months exposure malignancies excluding NMSC were reported in 5 patients (04 events per 100 patient-years) who received 5 mg twice daily of XELJANZ and 7 patients (06 events per 100 patient-years) who received 10 mg twice daily of XELJANZ The rate difference between XELJANZ doses (and the corresponding 95 confidence interval) was 02 (-04 07) events per 100 patient-years for 10 mg twice daily XELJANZ minus 5 mg twice daily XELJANZ One of these malignancies was a case of lymphoma that occurred during the 0 to 12 month period in a patient treated with XELJANZ 10 mg twice daily

The most common types of malignancy including malignancies observed during the long-term extension were lung and breast cancer followed by gastric colorectal renal cell prostate cancer lymphoma and malignant melanoma [see Warnings and Precautions (52)]

Laboratory Tests

Lymphocytes In the controlled clinical trials confirmed decreases in lymphocyte counts below 500 cellsmm3

occurred in 004 of patients for the 5 mg twice daily and 10 mg twice daily XELJANZ groups combined during the first 3 months of exposure

Confirmed lymphocyte counts less than 500 cellsmm3 were associated with an increased incidence of treated and serious infections [see Warnings and Precautions (54)]

Neutrophils In the controlled clinical trials confirmed decreases in ANC below 1000 cellsmm3 occurred in 007 of patients for the 5 mg twice daily and 10 mg twice daily XELJANZ groups combined during the first 3 months of exposure

There were no confirmed decreases in ANC below 500 cellsmm3 observed in any treatment group

There was no clear relationship between neutropenia and the occurrence of serious infections

In the long-term safety population the pattern and incidence of confirmed decreases in ANC remained consistent with what was seen in the controlled clinical trials [see Warnings and Precautions (54)]

Liver Enzyme Tests Confirmed increases in liver enzymes greater than 3 times the upper limit of normal (3x ULN) were observed in patients treated with XELJANZ In patients experiencing liver enzyme elevation modification of treatment regimen such as reduction in the dose of concomitant DMARD interruption of XELJANZ or reduction in XELJANZ dose resulted in decrease or normalization of liver enzymes

In the controlled monotherapy trials (0-3 months) no differences in the incidence of ALT or AST elevations were observed between the placebo and XELJANZ 5 mg and 10 mg twice daily groups

10

Reference ID 3213422

In the controlled background DMARD trials (0-3 months) ALT elevations greater than 3x ULN were observed in 10 13 and 12 of patients receiving placebo 5 mg and 10 mg twice daily respectively In these trials AST elevations greater than 3x ULN were observed in 06 05 and 04 of patients receiving placebo 5 mg and 10 mg twice daily respectively

One case of drug-induced liver injury was reported in a patient treated with XELJANZ 10 mg twice daily for approximately 25 months The patient developed symptomatic elevations of AST and ALT greater than 3x ULN and bilirubin elevations greater than 2x ULN which required hospitalizations and a liver biopsy

Lipids In the controlled clinical trials dose-related elevations in lipid parameters (total cholesterol LDL cholesterol HDL cholesterol triglycerides) were observed at one month of exposure and remained stable thereafter Changes in lipid parameters during the first 3 months of exposure in the controlled clinical trials are summarized below

bull Mean LDL cholesterol increased by 15 in the XELJANZ 5 mg twice daily arm and 19 in the XELJANZ 10 mg twice daily arm

bull Mean HDL cholesterol increased by 10 in the XELJANZ 5 mg twice daily arm and 12 in the XELJANZ 10 mg twice daily arm

bull Mean LDLHDL ratios were essentially unchanged in XELJANZ-treated patients

In a controlled clinical trial elevations in LDL cholesterol and ApoB decreased to pretreatment levels in response to statin therapy

In the long-term safety population elevations in lipid parameters remained consistent with what was seen in the controlled clinical trials

11

Reference ID 3213422

Serum Creatinine In the controlled clinical trials dose-related elevations in serum creatinine were observed with XELJANZ treatment The mean increase in serum creatinine was lt01 mgdL in the 12-month pooled safety analysis however with increasing duration of exposure in the long-term extensions up to 2 of patients were discontinued from XELJANZ treatment due to the protocol-specified discontinuation criterion of an increase in creatinine by more than 50 of baseline The clinical significance of the observed serum creatinine elevations is unknown

Other Adverse Reactions Adverse reactions occurring in 2 or more of patients on 5 mg twice daily or 10 mg twice daily XELJANZ and at least 1 greater than that observed in patients on placebo with or without DMARD are summarized in Table 4

Table 4 Adverse Reactions Occurring in at Least 2 or More of Patients on 5 or 10 mg Twice Daily XELJANZ With or Without DMARD (0-3 months) and at Least 1 Greater Than That Observed in Patients on Placebo

XELJANZ 5 mg Twice Daily

XELJANZ 10 mg Twice Daily

Placebo

Preferred Term N = 1336

() N = 1349

() N = 809

()

Diarrhea 40 29 23

Nasopharyngitis 38 28 28

Upper respiratory tract infection 45 38 33

Headache 43 34 21

Hypertension 16 23 11

N reflects randomized and treated patients from the seven clinical trials

Other adverse reactions occurring in controlled and open-label extension studies included

Blood and lymphatic system disorders Anemia Metabolism and nutrition disorders Dehydration Psychiatric disorders Insomnia Nervous system disorders Paresthesia Respiratory thoracic and mediastinal disorders Dyspnea cough sinus congestion Gastrointestinal disorders Abdominal pain dyspepsia vomiting gastritis nausea Hepatobiliary disorders Hepatic steatosis Skin and subcutaneous tissue disorders Rash erythema pruritus Musculoskeletal connective tissue and bone disorders Musculoskeletal pain arthralgia tendonitis joint swelling General disorders and administration site conditions Pyrexia fatigue peripheral edema

12

Reference ID 3213422

7 DRUG INTERACTIONS

71 Potent CYP3A4 Inhibitors Tofacitinib exposure is increased when XELJANZ is coadministered with potent inhibitors of cytochrome P450 (CYP) 3A4 (eg ketoconazole) [see Dosage and Administration (21) and Figure 3]

72 Moderate CYP3A4 and Potent CYP2C19 Inhibitors Tofacitinib exposure is increased when XELJANZ is coadministered with medications that result in both moderate inhibition of CYP3A4 and potent inhibition of CYP2C19 (eg fluconazole) [see Dosage and Administration (21) and Figure 3]

73 Potent CYP3A4 Inducers Tofacitinib exposure is decreased when XELJANZ is coadministered with potent CYP3A4 inducers (eg rifampin) [see Dosage and Administration (21) and Figure 3]

74 Immunosuppressive Drugs There is a risk of added immunosuppression when XELJANZ is coadministered with potent immunosuppressive drugs (eg azathioprine tacrolimus cyclosporine) Combined use of multiple-dose XELJANZ with potent immunosuppressives has not been studied in rheumatoid arthritis

8 USE IN SPECIFIC POPULATIONS

81 Pregnancy Teratogenic effects Pregnancy Category C There are no adequate and well-controlled studies in pregnant women XELJANZ should be used during pregnancy only if the potential benefit justifies the potential risk to the fetus Tofacitinib has been shown to be fetocidal and teratogenic in rats and rabbits when given at exposures 146 times and 13 times respectively the maximum recommended human dose (MRHD)

In a rat embryofetal developmental study tofacitinib was teratogenic at exposure levels approximately 146 times the MRHD (on an AUC basis at oral doses of 100 mgkgday) Teratogenic effects consisted of external and soft tissue malformations of anasarca and membranous ventricular septal defects respectively and skeletal malformations or variations (absent cervical arch bent femur fibula humerus radius scapula tibia and ulna sternoschisis absent rib misshapen femur branched rib fused rib fused sternebra and hemicentric thoracic centrum) In addition there was an increase in post-implantation loss consisting of early and late resorptions resulting in a reduced number of viable fetuses Mean fetal body weight was reduced No developmental toxicity was observed in rats at exposure levels approximately 58 times the MRHD (on an AUC basis at oral doses of 30 mgkgday) In the rabbit embryofetal developmental study tofacitinib was teratogenic at exposure levels approximately 13 times the MRHD (on an AUC basis at oral doses of 30 mgkgday) in the absence of signs of maternal toxicity Teratogenic effects included thoracogastroschisis omphalocele membranous ventricular septal defects and cranialskeletal malformations (microstomia microphthalmia)

13

Reference ID 3213422

mid-line and tail defects In addition there was an increase in post-implantation loss associated with late resorptions No developmental toxicity was observed in rabbits at exposure levels approximately 3 times the MRHD (on an AUC basis at oral doses of 10 mgkgday)

Nonteratogenic effects In a peri- and postnatal rat study there were reductions in live litter size postnatal survival and pup body weights at exposure levels approximately 73 times the MRHD (on an AUC basis at oral doses of 50 mgkgday) There was no effect on behavioral and learning assessments sexual maturation or the ability of the F1 generation rats to mate and produce viable F2 generation fetuses in rats at exposure levels approximately 17 times the MRHD (on an AUC basis at oral doses of 10 mgkgday)

Pregnancy Registry To monitor the outcomes of pregnant women exposed to XELJANZ a pregnancy registry has been established Physicians are encouraged to register patients and pregnant women are encouraged to register themselves by calling 1-877-311-8972

83 Nursing Mothers Tofacitinib was secreted in milk of lactating rats It is not known whether tofacitinib is excreted in human milk Because many drugs are excreted in human milk and because of the potential for serious adverse reactions in nursing infants from tofacitinib a decision should be made whether to discontinue nursing or to discontinue the drug taking into account the importance of the drug for the mother

84 Pediatric Use The safety and effectiveness of XELJANZ in pediatric patients have not been established

85 Geriatric Use Of the 3315 patients who enrolled in Studies I to V a total of 505 rheumatoid arthritis patients were 65 years of age and older including 71 patients 75 years and older The frequency of serious infection among XELJANZ-treated subjects 65 years of age and older was higher than among those under the age of 65 As there is a higher incidence of infections in the elderly population in general caution should be used when treating the elderly

86 Hepatic Impairment No dose adjustment is required in patients with mild hepatic impairment XELJANZ dose should be reduced to 5 mg once daily in patients with moderate hepatic impairment The safety and efficacy of XELJANZ have not been studied in patients with severe hepatic impairment or in patients with positive hepatitis B virus or hepatitis C virus serology [see Dosage and Administration (21) and Warnings and Precautions (56)]

87 Renal Impairment No dose adjustment is required in patients with mild renal impairment XELJANZ dose should be reduced to 5 mg once daily in patients with moderate and severe renal impairment [see Dosage and Administration (21)] In clinical trials XELJANZ was not evaluated in rheumatoid arthritis patients with baseline creatinine clearance values (estimated by the Cockroft-Gault equation) less than 40 mLmin

14

Reference ID 3213422

10 OVERDOSAGE Signs Symptoms and Laboratory Findings of Acute Overdosage in Humans There is no experience with overdose of XELJANZ

Treatment or Management of Overdose Pharmacokinetic data up to and including a single dose of 100 mg in healthy volunteers indicate that more than 95 of the administered dose is expected to be eliminated within 24 hours

There is no specific antidote for overdose with XELJANZ In case of an overdose it is recommended that the patient be monitored for signs and symptoms of adverse reactions Patients who develop adverse reactions should receive appropriate treatment

11 DESCRIPTION XELJANZ is the citrate salt of tofacitinib a JAK inhibitor

Tofacitinib citrate is a white to off-white powder with the following chemical name (3R4R)-4shymethyl-3-(methyl-7H-pyrrolo [23-d]pyrimidin-4-ylamino)-szlig-oxo-1-piperidinepropanenitrile 2shyhydroxy-123-propanetricarboxylate (11) It is freely soluble in water

Tofacitinib citrate has a molecular weight of 5045 Daltons (or 3124 Daltons as the tofacitinib free base) and a molecular formula of C16H20N6ObullC6H8O7 The chemical structure of tofacitinib citrate is

NN

Me

Me

N

N N H

O N

HO2C CO2H

HO2C

OH bull

XELJANZ is supplied for oral administration as 5 mg tofacitinib (equivalent to 8 mg tofacitinib citrate) white round immediate-release film-coated tablet Each tablet of XELJANZ contains the appropriate amount of XELJANZ as a citrate salt and the following inactive ingredients microcrystalline cellulose lactose monohydrate croscarmellose sodium magnesium stearate HPMC 2910Hypromellose 6cP titanium dioxide macrogolPEG3350 and triacetin

12 CLINICAL PHARMACOLOGY

121 Mechanism of Action Tofacitinib is a Janus kinase (JAK) inhibitor JAKs are intracellular enzymes which transmit signals arising from cytokine or growth factor-receptor interactions on the cellular membrane to influence cellular processes of hematopoiesis and immune cell function Within the signaling pathway JAKs phosphorylate and activate Signal Transducers and Activators of Transcription (STATs) which modulate intracellular activity including gene expression Tofacitinib modulates

15

Reference ID 3213422

the signaling pathway at the point of JAKs preventing the phosphorylation and activation of STATs JAK enzymes transmit cytokine signaling through pairing of JAKs (eg JAK1JAK3 JAK1JAK2 JAK1TyK2 JAK2JAK2) Tofacitinib inhibited the in vitro activities of JAK1JAK2 JAK1JAK3 and JAK2JAK2 combinations with IC50 of 406 56 and 1377 nM respectively However the relevance of specific JAK combinations to therapeutic effectiveness is not known

122 Pharmacodynamics Treatment with XELJANZ was associated with dose-dependent reductions of circulating CD1656+ natural killer cells with estimated maximum reductions occurring at approximately 8shy10 weeks after initiation of therapy These changes generally resolved within 2-6 weeks after discontinuation of treatment Treatment with XELJANZ was associated with dose-dependent increases in B cell counts Changes in circulating T-lymphocyte counts and T-lymphocyte subsets (CD3+ CD4+ and CD8+) were small and inconsistent The clinical significance of these changes is unknown

Total serum IgG IgM and IgA levels after 6-month dosing in patients with rheumatoid arthritis were lower than placebo however changes were small and not dose-dependent

After treatment with XELJANZ in patients with rheumatoid arthritis rapid decreases in serum C-reactive protein (CRP) were observed and maintained throughout dosing Changes in CRP observed with XELJANZ treatment do not reverse fully within 2 weeks after discontinuation indicating a longer duration of pharmacodynamic activity compared to the pharmacokinetic half-life

123 Pharmacokinetics Following oral administration of XELJANZ peak plasma concentrations are reached within 05shy1 hour elimination half-life is ~3 hours and a dose-proportional increase in systemic exposure was observed in the therapeutic dose range Steady state concentrations are achieved in 24-48 hours with negligible accumulation after twice daily administration

Absorption The absolute oral bioavailability of tofacitinib is 74 Coadministration of XELJANZ with a high-fat meal resulted in no changes in AUC while Cmax was reduced by 32 In clinical trials XELJANZ was administered without regard to meals

Distribution After intravenous administration the volume of distribution is 87 L The protein binding of tofacitinib is ~40 Tofacitinib binds predominantly to albumin and does not appear to bind to 1-acid glycoprotein Tofacitinib distributes equally between red blood cells and plasma

Metabolism and Elimination Clearance mechanisms for tofacitinib are approximately 70 hepatic metabolism and 30 renal excretion of the parent drug The metabolism of tofacitinib is primarily mediated by CYP3A4 with minor contribution from CYP2C19 In a human radiolabeled study more than 65 of the total circulating radioactivity was accounted for by unchanged tofacitinib with the remaining

16

Reference ID 3213422

35 attributed to 8 metabolites each accounting for less than 8 of total radioactivity The pharmacologic activity of tofacitinib is attributed to the parent molecule

Pharmacokinetics in Rheumatoid Arthritis Patients Population PK analysis in rheumatoid arthritis patients indicated no clinically relevant change in tofacitinib exposure after accounting for differences in renal function (ie creatinine clearance) between patients based on age weight gender and race (Figure 1) An approximately linear relationship between body weight and volume of distribution was observed resulting in higher peak (Cmax) and lower trough (Cmin) concentrations in lighter patients However this difference is not considered to be clinically relevant The between-subject variability ( coefficient of variation) in AUC of tofacitinib is estimated to be approximately 27

Specific Populations The effect of renal and hepatic impairment and other intrinsic factors on the pharmacokinetics of tofacitinib is shown in Figure 1

17

Reference ID 3213422

Figure 1 Impact of Intrinsic Factors on Tofacitinib Pharmacokinetics

Intrinsic Factor

Weight = 40 kg

Weight = 140 kg

Age = 80 years

Female

Asian

Black

Hispanic

Renal Impairment (Mild)

Renal Impairment (Moderate)

Renal Impairment (Severe)

Hepatic Impairment (Mild)

Hepatic Impairment (Moderate)

PK

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

0

Ratio and 90 CI Recommendation

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

Reduce Dose to 5 mg Once Daily

Reduce Dose to 5 mg Once Daily

No Dose Adjustment

Reduce Dose to 5 mg Once Daily

05 1 15 2 25 3 35 4

Ratio relative to reference

Supplemental doses are not necessary in patients after dialysis

Reference values for weight age gender and race comparisons are 70 kg 55 years male and White respectively Reference groups for renal and hepatic impairment data are subjects with normal renal and hepatic function

Drug Interactions

Potential for XELJANZ to Influence the PK of Other Drugs In vitro studies indicate that tofacitinib does not significantly inhibit or induce the activity of the

18

Reference ID 3213422

major human drug-metabolizing CYPs (CYP1A2 CYP2B6 CYP2C8 CYP2C9 CYP2C19 CYP2D6 and CYP3A4) at concentrations exceeding 185 times the steady state Cmax of a 5 mg twice daily dose These in vitro results were confirmed by a human drug interaction study showing no changes in the PK of midazolam a highly sensitive CYP3A4 substrate when coadministered with XELJANZ

In rheumatoid arthritis patients the oral clearance of tofacitinib does not vary with time indicating that tofacitinib does not normalize CYP enzyme activity in rheumatoid arthritis patients Therefore coadministration with XELJANZ is not expected to result in clinically relevant increases in the metabolism of CYP substrates in rheumatoid arthritis patients

In vitro data indicate that the potential for tofacitinib to inhibit transporters such as Pshyglycoprotein organic anionic or cationic transporters at therapeutic concentrations is low

Dosing recommendations for coadministered drugs following administration with XELJANZ are shown in Figure 2

Figure 2 Impact of XELJANZ on PK of Other Drugs

Coadministered PK Drug

Methotrexate AUC

Cmax

CYP3A Substrate AUC Midazolam

Cmax

Oral ContraceptivesLevonorgestrel

AUC

Cmax

Ethinyl Estradiol AUC

Cmax

OCT amp MATE Substrate AUC Metformin

Cmax

Ratio and 90 CI Recommendation

No Dose Adjustment

No dose adjustment for CYP3A substrates such as midazolam

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

0 025 05 075 1 125 15 175 2

Ratio relative to reference

Note Reference group is administration of concomitant medication alone OCT = Organic Cationic Transporter MATE = Multidrug and Toxic Compound Extrusion

Potential for Other Drugs to Influence the PK of Tofacitinib Since tofacitinib is metabolized by CYP3A4 interaction with drugs that inhibit or induce CYP3A4 is likely Inhibitors of CYP2C19 alone or P-glycoprotein are unlikely to substantially alter the PK of tofacitinib Dosing recommendations for XELJANZ for administration with CYP inhibitors or inducers are shown in Figure 3

19

Reference ID 3213422

Figure 3 Impact of Other Drugs on PK of XELJANZ

Coadministered PK Drug

CYP3A Inhib itor AUC Ketoconazole

Cmax

CYP3A amp CYP2C19 Inhib itor AUC

Cmax Fluconazole

CYP Inducer Rifampin AUC

Cmax

Methotrexate AUC

Cmax

Tacrolimus AUC Cmax

Cyclosporine AUC

Cmax

Ratio and 90 CI Recommendation

Reduce XELJANZ Dose to 5 mg Once Daily

Reduce XELJANZ Dose to 5 mg Once Daily

May Decrease Efficacy

No Dose Adjustment

There is a risk of added immunosuppressionif XELJANZ is taken with Tacrolimus

There is a risk of added immunosuppressionif XELJANZ is taken with Cyclosporine

0 05 1 15 2 25

Ratio relative to reference

Note Reference group is administration of tofacitinib alone

13 NONCLINICAL TOXICOLOGY

131 Carcinogenesis Mutagenesis Impairment of Fertility In a 39-week toxicology study in monkeys tofacitinib at exposure levels approximately 6 times the MRHD (on an AUC basis at oral doses of 5 mgkg twice daily) produced lymphomas No lymphomas were observed in this study at exposure levels 1 times the MRHD (on an AUC basis at oral doses of 1 mgkg twice daily)

The carcinogenic potential of tofacitinib was assessed in 6-month rasH2 transgenic mouse carcinogenicity and 2-year rat carcinogenicity studies Tofacitinib at exposure levels approximately 34 times the MRHD (on an AUC basis at oral doses of 200 mgkgday) was not carcinogenic in mice

In the 24-month oral carcinogenicity study in Sprague-Dawley rats tofacitinib caused benign Leydig cell tumors hibernomas (malignancy of brown adipose tissue) and benign thymomas at doses greater than or equal to 30 mgkgday (approximately 42 times the exposure levels at the MRHD on an AUC basis) The relevance of benign Leydig cell tumors to human risk is not known

20

Reference ID 3213422

Tofacitinib was not mutagenic in the bacterial reverse mutation assay It was positive for clastogenicity in the in vitro chromosome aberration assay with human lymphocytes in the presence of metabolic enzymes but negative in the absence of metabolic enzymes Tofacitinib was negative in the in vivo rat micronucleus assay and in the in vitro CHO-HGPRT assay and the in vivo rat hepatocyte unscheduled DNA synthesis assay

In rats tofacitinib at exposure levels approximately 17 times the MRHD (on an AUC basis at oral doses of 10 mgkgday) reduced female fertility due to increased post-implantation loss There was no impairment of female rat fertility at exposure levels of tofacitinib equal to the MRHD (on an AUC basis at oral doses of 1 mgkgday) Tofacitinib exposure levels at approximately 133 times the MRHD (on an AUC basis at oral doses of 100 mgkgday) had no effect on male fertility sperm motility or sperm concentration

14 CLINICAL STUDIES The XELJANZ clinical development program included two dose-ranging trials and five confirmatory trials

DOSE-RANGING TRIALS Dose selection for XELJANZ was based on two pivotal dose-ranging trials

Dose-Ranging Study 1 was a 6-month monotherapy trial in 384 patients with active rheumatoid arthritis who had an inadequate response to a DMARD Patients who previously received adalimumab therapy were excluded Patients were randomized to 1 of 7 monotherapy treatments XELJANZ 1 3 5 10 or 15 mg twice daily adalimumab 40 mg subcutaneously every other week for 10 weeks followed by XELJANZ 5 mg twice daily for 3 months or placebo

Dose-Ranging Study 2 was a 6-month trial in which 507 patients with active rheumatoid arthritis who had an inadequate response to MTX alone received one of 6 dose regimens of XELJANZ (20 mg once daily 1 3 5 10 or 15 mg twice daily) or placebo added to background MTX

The results of XELJANZ-treated patients achieving ACR20 responses in Studies 1 and 2 are shown in Figure 4 Although a dose-response relationship was observed in Study 1 the proportion of patients with an ACR20 response did not clearly differ between the 10 mg and 15 mg doses Furthermore there was a smaller proportion of patients who responded to adalimumab monotherapy compared to those treated with XELJANZ doses 3 mg twice daily and greater In Study 2 a smaller proportion of patients achieved an ACR20 response in the placebo and XELJANZ 1 mg groups compared to patients treated with the other XELJANZ doses However there was no difference in the proportion of responders among patients treated with XELJANZ 3 5 10 15 mg twice daily or 20 mg once daily doses

21

Reference ID 3213422

Figure 4 Proportion of Patients with ACR20 Response at Month 3 in Dose-Ranging Studies 1 and 2

CONFIRMATORY TRIALS Study I was a 6-month monotherapy trial in which 610 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to a DMARD (nonbiologic or biologic) received XELJANZ 5 or 10 mg twice daily or placebo At the Month 3 visit all patients randomized to placebo treatment were advanced in a blinded fashion to a second predetermined treatment of XELJANZ 5 or 10 mg twice daily The primary endpoints at Month 3 were the proportion of patients who achieved an ACR20 response changes in Health Assessment Questionnaire ndash Disability Index (HAQ-DI) and rates of Disease Activity Score DAS28-4(ESR) less than 26

Study II was a 12-month trial in which 792 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to a nonbiologic DMARD received XELJANZ 5 or 10 mg twice daily or placebo added to background DMARD treatment (excluding potent immunosuppressive treatments such as azathioprine or cyclosporine) At the Month 3 visit nonresponding patients were advanced in a blinded fashion to a second predetermined treatment of XELJANZ 5 or 10 mg twice daily At the end of Month 6 all placebo patients were advanced to their second predetermined treatment in a blinded fashion The primary endpoints were the proportion of patients who achieved an ACR20 response at Month 6 changes in HAQ-DI at Month 3 and rates of DAS28-4(ESR) less than 26 at Month 6

Study III was a 12-month trial in 717 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to MTX Patients received XELJANZ 5 or 10 mg twice daily adalimumab 40 mg subcutaneously every other week or placebo added to background MTX

22

Reference ID 3213422

Placebo patients were advanced as in Study II The primary endpoints were the proportion of patients who achieved an ACR20 response at Month 6 HAQ-DI at Month 3 and DAS28-4(ESR) less than 26 at Month 6

Study IV is an ongoing 2-year trial with a planned analysis at 1 year in which 797 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to MTX received XELJANZ 5 or 10 mg twice daily or placebo added to background MTX Placebo patients were advanced as in Study II The primary endpoints were the proportion of patients who achieved an ACR20 response at Month 6 mean change from baseline in van der Heijde-modified total Sharp Score (mTSS) at Month 6 HAQ-DI at Month 3 and DAS28-4(ESR) less than 26 at Month 6

Study V was a 6-month trial in which 399 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to at least one approved TNF-inhibiting biologic agent received XELJANZ 5 or 10 mg twice daily or placebo added to background MTX At the Month 3 visit all patients randomized to placebo treatment were advanced in a blinded fashion to a second predetermined treatment of XELJANZ 5 or 10 mg twice daily The primary endpoints at Month 3 were the proportion of patients who achieved an ACR20 response HAQ-DI and DAS28-4(ESR) less than 26

Clinical Response The percentages of XELJANZ-treated patients achieving ACR20 ACR50 and ACR70 responses in Studies I IV and V are shown in Table 5 Similar results were observed with Studies II and III In all trials patients treated with either 5 or 10 mg twice daily XELJANZ had higher ACR20 ACR50 and ACR70 response rates versus placebo with or without background DMARD treatment at Month 3 and Month 6 Higher ACR20 response rates were observed within 2 weeks compared to placebo In the 12-month trials ACR response rates in XELJANZ-treated patients were consistent at 6 and 12 months

23

Reference ID 3213422

Table 5 Proportion of Patients with an ACR Response Percent of Patients

Monotherapy in Nonbiologic or Biologic DMARD Inadequate

Respondersc

MTX Inadequate Respondersd TNF Inhibitor Inadequate Responderse

Study I Study IV Study V

Na PBO

122

XELJANZ 5 mg Twice

Daily

243

XELJANZ 10 mg Twice Daily

245

PBO + MTX

160

XELJANZ 5 mg Twice

Daily + MTX

321

XELJANZ 10 mg Twice

Daily + MTX

316

PBO +

MTX

132

XELJANZ 5 mg Twice

Daily + MTX

133

XELJANZ 10 mg Twice

Daily + MTX

134 ACR20 Month 3 Month 6

26 NAb

59 69

65 70

27 25

55 50

67 62

24 NA

41 51

48 54

ACR50 Month 3 Month 6

12 NA

31 42

36 46

8 9

29 32

37 44

8 NA

26 37

28 30

ACR70 Month 3 Month 6

6 NA

15 22

20 29

3 1

11 14

17 23

2 NA

14 16

10 16

a N is number of randomized and treated patients b NA Not applicable as data for placebo treatment is not available beyond 3 months in Studies I and V due to placebo advancement c Inadequate response to at least one DMARD (biologic or nonbiologic) due to lack of efficacy or toxicity d Inadequate response to MTX defined as the presence of sufficient residual disease activity to meet the entry criteria e Inadequate response to a least one TNF inhibitor due to lack of efficacy andor intolerance

In Study IV a greater proportion of patients treated with XELJANZ 5 mg or 10 mg twice daily plus MTX achieved a low level of disease activity as measured by a DAS28-4(ESR) less than 26 at 6 months compared to those treated with MTX alone (Table 6)

24

Reference ID 3213422

Table 6 Proportion of Patients with DAS28-4(ESR) Less Than 26 with Number of Residual Active Joints Study IV DAS28-4(ESR) Less Than 26 Placebo + MTX

160

XELJANZ 5 mg Twice Daily + MTX

321

XELJANZ 10 mg Twice Daily + MTX

316 Proportion of responders at Month 6 (n) 1 (2) 6 (19) 13 (42)

Of responders proportion with 0 active joints (n)

50 (1) 42 (8) 36 (15)

Of responders proportion with 1 active joint (n) 0 5 (1) 17 (7) Of responders proportion with 2 active joints (n)

0 32 (6) 7 (3)

Of responders proportion with 3 or more active joints (n)

50 (1) 21 (4) 40 (17)

The results of the components of the ACR response criteria for Study IV are shown in Table 7 Similar results were observed in Studies I II III and V

Table 7 Components of ACR Response at 3 Months Study IV

XELJANZ

5 mg

Twice Daily + MTX

N=321

XELJANZ

10 mg

Twice Daily + MTX

N=316

Placebo + MTX

N=160

Component (mean) a Baseline Month 3a Baseline Month 3a Baseline Month 3a

Number of tender

joints 24 13 23 10 23 18

(0-68) (14) (14) (15) (12) (13) (14)

Number of swollen

joints 14 6 14 6 14 10

(0-66) (8) (8) (8) (7) (9) (9)

Painb 58

(23)

34

(23)

58

(24)

29

(22)

55

(24)

47

(24)

Patient global

assessmentb

58

(24)

35

(23)

57

(23)

29

(20)

54

(23)

47

(24)

Disability index

(HAQ-DI)c 141 099 140 084 132 119

(068) (065) (066) (064) (067) (068)

25

Reference ID 3213422

Physician global

assessmentb 59 30 58 24 56 43

(16) (19) (17) (17) (18) (22)

CRP (mgL) 153 71 171 44 137 146

(190) (191) (269) (86) (149) (187) aData shown is mean (Standard Deviation) at Month 3bVisual analog scale 0 = best 100 = worst cHealth Assessment Questionnaire Disability Index 0 = best 3 = worst 20 questions categories dressing and grooming arising eating walking hygiene reach grip and activities

The percent of ACR20 responders by visit for Study IV is shown in Figure 5 Similar responses were observed in Studies I II III and V

Figure 5 Percentage of ACR20 Responders by Visit for Study IV

Physical Function Response Improvement in physical functioning was measured by the HAQ-DI Patients receiving XELJANZ 5 and 10 mg twice daily demonstrated greater improvement from baseline in physical functioning compared to placebo at Month 3

The mean (95 CI) difference from placebo in HAQ-DI improvement from baseline at Month 3 in Study III was -022 (-035 -010) in patients receiving 5 mg XELJANZ twice daily and -032 (-044 -019) in patients receiving 10 mg XELJANZ twice daily Similar results were obtained in

26

Reference ID 3213422

Studies I II IV and V In the 12-month trials HAQ-DI results in XELJANZ-treated patients were consistent at 6 and 12 months

16 HOW SUPPLIEDSTORAGE AND HANDLING XELJANZ is provided as 5 mg tofacitinib (equivalent to 8 mg tofacitinib citrate) tablets White round immediate-release film-coated tablets debossed with ldquoPfizerrdquo on one side and ldquoJKI 5rdquo on the other side and available in

Bottles of 60 NDC 0069-1001-01 Bottles of 180 NDC 0069-1001-02

Storage and Handling Store at 20degC to 25degC (68degF to 77degF) [See USP Controlled Room Temperature]

Do not repackage

17 PATIENT COUNSELING INFORMATION See FDA-approved patient labeling (Medication Guide)

Inform patients of the availability of a Medication Guide and instruct them to read the Medication Guide prior to taking XELJANZ Instruct patients to take XELJANZ only as prescribed

This productrsquos label may have been updated For current full prescribing information please visit wwwpfizercom

LAB-0445-10

27

Reference ID 3213422

MEDICATION GUIDE

XELJANZ (ZELrsquo JANSrsquo) (tofacitinib)

Read this Medication Guide before you start taking XELJANZ and each time you get a refill There may be new information This Medication Guide does not take the place of talking to your healthcare provider about your medical condition or treatment

What is the most important information I should know about XELJANZ XELJANZ may cause serious side effects including

1 Serious infections

XELJANZ is a medicine that affects your immune system XELJANZ can lower the ability of your immune system to fight infections Some people have serious infections while taking XELJANZ including tuberculosis (TB) and infections caused by bacteria fungi or viruses that can spread throughout the body Some people have died from these infections Your healthcare provider should test you for TB before starting XELJANZ Your healthcare provider should monitor you closely for signs and symptoms of

TB infection during treatment with XELJANZ

You should not start taking XELJANZ if you have any kind of infection unless your healthcare provider tells you it is okay

Before starting XELJANZ tell your healthcare provider if you think you have an infection or have symptoms of an infection such as

o fever sweating or chills o warm red or painful skin o muscle aches or sores on your body o cough o diarrhea or stomach pain o shortness of breath o burning when you urinate o blood in phlegm or urinating more often o weight loss than normal

o feeling very tired are being treated for an infection get a lot of infections or have infections that keep coming back have diabetes HIV or a weak immune system People with these conditions

have a higher chance for infections have TB or have been in close contact with someone with TB live or have lived or have traveled to certain parts of the country (such as the

Ohio and Mississippi River valleys and the Southwest) where there is an increased chance for getting certain kinds of fungal infections (histoplasmosis coccidioidomycosis or blastomycosis) These infections may happen or become more severe if you use XELJANZ Ask your healthcare provider if you do not know if you have lived in an area where these infections are common

have or have had hepatitis B or C

28

Reference ID 3213422

After starting XELJANZ call your healthcare provider right away if you have any symptoms of an infection XELJANZ can make you more likely to get infections or make worse any infection that you have

2 Cancer and immune system problems

XELJANZ may increase your risk of certain cancers by changing the way your immune system works

Lymphoma and other cancers can happen in patients taking XELJANZ Tell your healthcare provider if you have ever had any type of cancer

Some people who have taken XELJANZ with certain other medicines to prevent kidney transplant rejection have had a problem with certain white blood cells growing out of control (Epstein Barr Virus-associated post transplant lymphoproliferative disorder)

3 Tears (perforation) in the stomach or intestines

Tell your healthcare provider if you have had diverticulitis (inflammation in parts of the large intestine) or ulcers in your stomach or intestines Some people taking XELJANZ get tears in their stomach or intestine This happens most often in people who also take nonsteroidal anti-inflammatory drugs (NSAIDs) corticosteroids or methotrexate

Tell your healthcare provider right away if you have fever and stomach-area pain that does not go away and a change in your bowel habits

4 Changes in certain laboratory test results Your healthcare provider should do blood tests before you start receiving XELJANZ and while you take XELJANZ to check for the following side effects

changes in lymphocyte counts Lymphocytes are white blood cells that help the body fight off infections

low neutrophil counts Neutrophils are white blood cells that help the body fight off infections

low red blood cell count This may mean that you have anemia which may make you feel weak and tired

Your healthcare provider should routinely check certain liver tests

You should not receive XELJANZ if your lymphocyte count neutrophil count or red blood cell count is too low or your liver tests are too high

Your healthcare provider may stop your XELJANZ treatment for a period of time if needed because of changes in these blood test results

29

Reference ID 3213422

You may also have changes in other laboratory tests such as your blood cholesterol levels Your healthcare provider should do blood tests to check your cholesterol levels 4 to 8 weeks after you start receiving XELJANZ and as needed after that Normal cholesterol levels are important to good heart health

See ldquoWhat are the possible side effects of XELJANZrdquo for more information about side effects

What is XELJANZ

XELJANZ is a prescription medicine called a Janus kinase (JAK) inhibitor XELJANZ is used to treat adults with moderately to severely active rheumatoid arthritis in which methotrexate did not work well

It is not known if XELJANZ is safe and effective in people with Hepatitis B or C

XELJANZ is not for people with severe liver problems

It is not known if XELJANZ is safe and effective in children

What should I tell my healthcare provider before taking XELJANZ

XELJANZ may not be right for you Before taking XELJANZ tell your healthcare provider if you have an infection See ldquoWhat is the most important information I should know

about XELJANZrdquo have liver problems have kidney problems have any stomach area (abdominal) pain or been diagnosed with diverticulitis or

ulcers in your stomach or intestines have had a reaction to tofacitinib or any of the ingredients in XELJANZ have recently received or are scheduled to receive a vaccine People who take

XELJANZ should not receive live vaccines People taking XELJANZ can receive non-live vaccines

have any other medical conditions plan to become pregnant or are pregnant It is not known if XELJANZ will harm

an unborn baby

Pregnancy Registry Pfizer has a registry for pregnant women who take XELJANZ The purpose of this registry is to check the health of the pregnant mother and her baby If you are pregnant or become pregnant while taking XELJANZ talk to your healthcare provider about how you can join this pregnancy registry or you may contact the registry at 1-877-311-8972 to enroll

plan to breastfeed or are breastfeeding You and your healthcare provider should decide if you will take XELJANZ or breastfeed You should not do both

30

Reference ID 3213422

Tell your healthcare provider about all the medicines you take including prescription and non-prescription medicines vitamins and herbal supplements XELJANZ and other medicines may affect each other causing side effects

Especially tell your healthcare provider if you take any other medicines to treat your rheumatoid arthritis You should not take

tocilizumab (Actemrareg) etanercept (Enbrelreg) adalimumab (Humirareg) infliximab (Remicadereg) rituximab (Rituxanreg) abatacept (Orenciareg) anakinra (Kineretreg) certolizumab (Cimziareg) golimumab (Simponireg) azathioprine cyclosporine or other immunosuppressive drugs while you are taking XELJANZ Taking XELJANZ with these medicines may increase your risk of infection

medicines that affect the way certain liver enzymes work Ask your healthcare provider if you are not sure if your medicine is one of these

Know the medicines you take Keep a list of them to show your healthcare provider and pharmacist when you get a new medicine

How should I take XELJANZ

Take XELJANZ as your healthcare provider tells you to take it

Take XELJANZ 2 times a day with or without food

If you take too much XELJANZ call your healthcare provider or go the nearest hospital emergency room right away

What are possible side effects of XELJANZ

XELJANZ may cause serious side effects including

See ldquoWhat is the most important information I should know about XELJANZrdquo

Hepatitis B or C activation infection in people who carry the virus in their blood If you are a carrier of the hepatitis B or C virus (viruses that affect the liver) the virus may become active while you use XELJANZ Your healthcare provider may do blood tests before you start treatment with XELJANZ and while you are using XELJANZ Tell your healthcare provider if you have any of the following symptoms of a possible hepatitis B or C infection

o feel very tired o fevers o skin or eyes look yellow o chills o little or no appetite o stomach discomfort o vomiting o muscle aches o clay-colored bowel o dark urine

movements o skin rash

31

Reference ID 3213422

Common side effects of XELJANZ include upper respiratory tract infections (common cold sinus infections) headache diarrhea nasal congestion sore throat and runny nose (nasopharyngitis)

Tell your healthcare provider if you have any side effect that bothers you or that does not go away

These are not all the possible side effects of XELJANZ For more information ask your healthcare provider or pharmacist

Call your doctor for medical advice about side effects You may report side effects to FDA at 1-800-FDA-1088

You may also report side effects to Pfizer at 1-800-438-1985

How should I store XELJANZ

Store XELJANZ at 68degF to 77degF (room temperature)

Safely throw away medicine that is out of date or no longer needed

Keep XELJANZ and all medicines out of the reach of children

General information about the safe and effective use of XELJANZ

Medicines are sometimes prescribed for purposes other than those listed in a Medication Guide Do not use XELJANZ for a condition for which it was not prescribed Do not give XELJANZ to other people even if they have the same symptoms you have It may harm them

This Medication Guide summarizes the most important information about XELJANZ If you would like more information talk to your healthcare provider You can ask your pharmacist or healthcare provider for information about XELJANZ that is written for health professionals

What are the ingredients in XELJANZ

Active ingredient tofacitinib citrate

Inactive ingredients microcrystalline cellulose lactose monohydrate croscarmellose sodium magnesium stearate HPMC 2910Hypromellose 6cP titanium dioxide macrogolPEG3350 and triacetin

32

Reference ID 3213422

This Medication Guide has been approved by the US Food and Drug Administration

LAB-0535-10 Issued November 2012

33

Reference ID 3213422

years) who received either XELJANZ 5 mg or 10 mg twice daily The rate difference between treatment groups (and the corresponding 95 confidence interval) was 03 (-01 07) events per 100 patient-years for the combined 5 mg and 10 mg twice daily XELJANZ group minus placebo

In the seven controlled trials during the 0 to 12 months exposure malignancies excluding NMSC were reported in 5 patients (04 events per 100 patient-years) who received 5 mg twice daily of XELJANZ and 7 patients (06 events per 100 patient-years) who received 10 mg twice daily of XELJANZ The rate difference between XELJANZ doses (and the corresponding 95 confidence interval) was 02 (-04 07) events per 100 patient-years for 10 mg twice daily XELJANZ minus 5 mg twice daily XELJANZ One of these malignancies was a case of lymphoma that occurred during the 0 to 12 month period in a patient treated with XELJANZ 10 mg twice daily

The most common types of malignancy including malignancies observed during the long-term extension were lung and breast cancer followed by gastric colorectal renal cell prostate cancer lymphoma and malignant melanoma [see Warnings and Precautions (52)]

Laboratory Tests

Lymphocytes In the controlled clinical trials confirmed decreases in lymphocyte counts below 500 cellsmm3

occurred in 004 of patients for the 5 mg twice daily and 10 mg twice daily XELJANZ groups combined during the first 3 months of exposure

Confirmed lymphocyte counts less than 500 cellsmm3 were associated with an increased incidence of treated and serious infections [see Warnings and Precautions (54)]

Neutrophils In the controlled clinical trials confirmed decreases in ANC below 1000 cellsmm3 occurred in 007 of patients for the 5 mg twice daily and 10 mg twice daily XELJANZ groups combined during the first 3 months of exposure

There were no confirmed decreases in ANC below 500 cellsmm3 observed in any treatment group

There was no clear relationship between neutropenia and the occurrence of serious infections

In the long-term safety population the pattern and incidence of confirmed decreases in ANC remained consistent with what was seen in the controlled clinical trials [see Warnings and Precautions (54)]

Liver Enzyme Tests Confirmed increases in liver enzymes greater than 3 times the upper limit of normal (3x ULN) were observed in patients treated with XELJANZ In patients experiencing liver enzyme elevation modification of treatment regimen such as reduction in the dose of concomitant DMARD interruption of XELJANZ or reduction in XELJANZ dose resulted in decrease or normalization of liver enzymes

In the controlled monotherapy trials (0-3 months) no differences in the incidence of ALT or AST elevations were observed between the placebo and XELJANZ 5 mg and 10 mg twice daily groups

10

Reference ID 3213422

In the controlled background DMARD trials (0-3 months) ALT elevations greater than 3x ULN were observed in 10 13 and 12 of patients receiving placebo 5 mg and 10 mg twice daily respectively In these trials AST elevations greater than 3x ULN were observed in 06 05 and 04 of patients receiving placebo 5 mg and 10 mg twice daily respectively

One case of drug-induced liver injury was reported in a patient treated with XELJANZ 10 mg twice daily for approximately 25 months The patient developed symptomatic elevations of AST and ALT greater than 3x ULN and bilirubin elevations greater than 2x ULN which required hospitalizations and a liver biopsy

Lipids In the controlled clinical trials dose-related elevations in lipid parameters (total cholesterol LDL cholesterol HDL cholesterol triglycerides) were observed at one month of exposure and remained stable thereafter Changes in lipid parameters during the first 3 months of exposure in the controlled clinical trials are summarized below

bull Mean LDL cholesterol increased by 15 in the XELJANZ 5 mg twice daily arm and 19 in the XELJANZ 10 mg twice daily arm

bull Mean HDL cholesterol increased by 10 in the XELJANZ 5 mg twice daily arm and 12 in the XELJANZ 10 mg twice daily arm

bull Mean LDLHDL ratios were essentially unchanged in XELJANZ-treated patients

In a controlled clinical trial elevations in LDL cholesterol and ApoB decreased to pretreatment levels in response to statin therapy

In the long-term safety population elevations in lipid parameters remained consistent with what was seen in the controlled clinical trials

11

Reference ID 3213422

Serum Creatinine In the controlled clinical trials dose-related elevations in serum creatinine were observed with XELJANZ treatment The mean increase in serum creatinine was lt01 mgdL in the 12-month pooled safety analysis however with increasing duration of exposure in the long-term extensions up to 2 of patients were discontinued from XELJANZ treatment due to the protocol-specified discontinuation criterion of an increase in creatinine by more than 50 of baseline The clinical significance of the observed serum creatinine elevations is unknown

Other Adverse Reactions Adverse reactions occurring in 2 or more of patients on 5 mg twice daily or 10 mg twice daily XELJANZ and at least 1 greater than that observed in patients on placebo with or without DMARD are summarized in Table 4

Table 4 Adverse Reactions Occurring in at Least 2 or More of Patients on 5 or 10 mg Twice Daily XELJANZ With or Without DMARD (0-3 months) and at Least 1 Greater Than That Observed in Patients on Placebo

XELJANZ 5 mg Twice Daily

XELJANZ 10 mg Twice Daily

Placebo

Preferred Term N = 1336

() N = 1349

() N = 809

()

Diarrhea 40 29 23

Nasopharyngitis 38 28 28

Upper respiratory tract infection 45 38 33

Headache 43 34 21

Hypertension 16 23 11

N reflects randomized and treated patients from the seven clinical trials

Other adverse reactions occurring in controlled and open-label extension studies included

Blood and lymphatic system disorders Anemia Metabolism and nutrition disorders Dehydration Psychiatric disorders Insomnia Nervous system disorders Paresthesia Respiratory thoracic and mediastinal disorders Dyspnea cough sinus congestion Gastrointestinal disorders Abdominal pain dyspepsia vomiting gastritis nausea Hepatobiliary disorders Hepatic steatosis Skin and subcutaneous tissue disorders Rash erythema pruritus Musculoskeletal connective tissue and bone disorders Musculoskeletal pain arthralgia tendonitis joint swelling General disorders and administration site conditions Pyrexia fatigue peripheral edema

12

Reference ID 3213422

7 DRUG INTERACTIONS

71 Potent CYP3A4 Inhibitors Tofacitinib exposure is increased when XELJANZ is coadministered with potent inhibitors of cytochrome P450 (CYP) 3A4 (eg ketoconazole) [see Dosage and Administration (21) and Figure 3]

72 Moderate CYP3A4 and Potent CYP2C19 Inhibitors Tofacitinib exposure is increased when XELJANZ is coadministered with medications that result in both moderate inhibition of CYP3A4 and potent inhibition of CYP2C19 (eg fluconazole) [see Dosage and Administration (21) and Figure 3]

73 Potent CYP3A4 Inducers Tofacitinib exposure is decreased when XELJANZ is coadministered with potent CYP3A4 inducers (eg rifampin) [see Dosage and Administration (21) and Figure 3]

74 Immunosuppressive Drugs There is a risk of added immunosuppression when XELJANZ is coadministered with potent immunosuppressive drugs (eg azathioprine tacrolimus cyclosporine) Combined use of multiple-dose XELJANZ with potent immunosuppressives has not been studied in rheumatoid arthritis

8 USE IN SPECIFIC POPULATIONS

81 Pregnancy Teratogenic effects Pregnancy Category C There are no adequate and well-controlled studies in pregnant women XELJANZ should be used during pregnancy only if the potential benefit justifies the potential risk to the fetus Tofacitinib has been shown to be fetocidal and teratogenic in rats and rabbits when given at exposures 146 times and 13 times respectively the maximum recommended human dose (MRHD)

In a rat embryofetal developmental study tofacitinib was teratogenic at exposure levels approximately 146 times the MRHD (on an AUC basis at oral doses of 100 mgkgday) Teratogenic effects consisted of external and soft tissue malformations of anasarca and membranous ventricular septal defects respectively and skeletal malformations or variations (absent cervical arch bent femur fibula humerus radius scapula tibia and ulna sternoschisis absent rib misshapen femur branched rib fused rib fused sternebra and hemicentric thoracic centrum) In addition there was an increase in post-implantation loss consisting of early and late resorptions resulting in a reduced number of viable fetuses Mean fetal body weight was reduced No developmental toxicity was observed in rats at exposure levels approximately 58 times the MRHD (on an AUC basis at oral doses of 30 mgkgday) In the rabbit embryofetal developmental study tofacitinib was teratogenic at exposure levels approximately 13 times the MRHD (on an AUC basis at oral doses of 30 mgkgday) in the absence of signs of maternal toxicity Teratogenic effects included thoracogastroschisis omphalocele membranous ventricular septal defects and cranialskeletal malformations (microstomia microphthalmia)

13

Reference ID 3213422

mid-line and tail defects In addition there was an increase in post-implantation loss associated with late resorptions No developmental toxicity was observed in rabbits at exposure levels approximately 3 times the MRHD (on an AUC basis at oral doses of 10 mgkgday)

Nonteratogenic effects In a peri- and postnatal rat study there were reductions in live litter size postnatal survival and pup body weights at exposure levels approximately 73 times the MRHD (on an AUC basis at oral doses of 50 mgkgday) There was no effect on behavioral and learning assessments sexual maturation or the ability of the F1 generation rats to mate and produce viable F2 generation fetuses in rats at exposure levels approximately 17 times the MRHD (on an AUC basis at oral doses of 10 mgkgday)

Pregnancy Registry To monitor the outcomes of pregnant women exposed to XELJANZ a pregnancy registry has been established Physicians are encouraged to register patients and pregnant women are encouraged to register themselves by calling 1-877-311-8972

83 Nursing Mothers Tofacitinib was secreted in milk of lactating rats It is not known whether tofacitinib is excreted in human milk Because many drugs are excreted in human milk and because of the potential for serious adverse reactions in nursing infants from tofacitinib a decision should be made whether to discontinue nursing or to discontinue the drug taking into account the importance of the drug for the mother

84 Pediatric Use The safety and effectiveness of XELJANZ in pediatric patients have not been established

85 Geriatric Use Of the 3315 patients who enrolled in Studies I to V a total of 505 rheumatoid arthritis patients were 65 years of age and older including 71 patients 75 years and older The frequency of serious infection among XELJANZ-treated subjects 65 years of age and older was higher than among those under the age of 65 As there is a higher incidence of infections in the elderly population in general caution should be used when treating the elderly

86 Hepatic Impairment No dose adjustment is required in patients with mild hepatic impairment XELJANZ dose should be reduced to 5 mg once daily in patients with moderate hepatic impairment The safety and efficacy of XELJANZ have not been studied in patients with severe hepatic impairment or in patients with positive hepatitis B virus or hepatitis C virus serology [see Dosage and Administration (21) and Warnings and Precautions (56)]

87 Renal Impairment No dose adjustment is required in patients with mild renal impairment XELJANZ dose should be reduced to 5 mg once daily in patients with moderate and severe renal impairment [see Dosage and Administration (21)] In clinical trials XELJANZ was not evaluated in rheumatoid arthritis patients with baseline creatinine clearance values (estimated by the Cockroft-Gault equation) less than 40 mLmin

14

Reference ID 3213422

10 OVERDOSAGE Signs Symptoms and Laboratory Findings of Acute Overdosage in Humans There is no experience with overdose of XELJANZ

Treatment or Management of Overdose Pharmacokinetic data up to and including a single dose of 100 mg in healthy volunteers indicate that more than 95 of the administered dose is expected to be eliminated within 24 hours

There is no specific antidote for overdose with XELJANZ In case of an overdose it is recommended that the patient be monitored for signs and symptoms of adverse reactions Patients who develop adverse reactions should receive appropriate treatment

11 DESCRIPTION XELJANZ is the citrate salt of tofacitinib a JAK inhibitor

Tofacitinib citrate is a white to off-white powder with the following chemical name (3R4R)-4shymethyl-3-(methyl-7H-pyrrolo [23-d]pyrimidin-4-ylamino)-szlig-oxo-1-piperidinepropanenitrile 2shyhydroxy-123-propanetricarboxylate (11) It is freely soluble in water

Tofacitinib citrate has a molecular weight of 5045 Daltons (or 3124 Daltons as the tofacitinib free base) and a molecular formula of C16H20N6ObullC6H8O7 The chemical structure of tofacitinib citrate is

NN

Me

Me

N

N N H

O N

HO2C CO2H

HO2C

OH bull

XELJANZ is supplied for oral administration as 5 mg tofacitinib (equivalent to 8 mg tofacitinib citrate) white round immediate-release film-coated tablet Each tablet of XELJANZ contains the appropriate amount of XELJANZ as a citrate salt and the following inactive ingredients microcrystalline cellulose lactose monohydrate croscarmellose sodium magnesium stearate HPMC 2910Hypromellose 6cP titanium dioxide macrogolPEG3350 and triacetin

12 CLINICAL PHARMACOLOGY

121 Mechanism of Action Tofacitinib is a Janus kinase (JAK) inhibitor JAKs are intracellular enzymes which transmit signals arising from cytokine or growth factor-receptor interactions on the cellular membrane to influence cellular processes of hematopoiesis and immune cell function Within the signaling pathway JAKs phosphorylate and activate Signal Transducers and Activators of Transcription (STATs) which modulate intracellular activity including gene expression Tofacitinib modulates

15

Reference ID 3213422

the signaling pathway at the point of JAKs preventing the phosphorylation and activation of STATs JAK enzymes transmit cytokine signaling through pairing of JAKs (eg JAK1JAK3 JAK1JAK2 JAK1TyK2 JAK2JAK2) Tofacitinib inhibited the in vitro activities of JAK1JAK2 JAK1JAK3 and JAK2JAK2 combinations with IC50 of 406 56 and 1377 nM respectively However the relevance of specific JAK combinations to therapeutic effectiveness is not known

122 Pharmacodynamics Treatment with XELJANZ was associated with dose-dependent reductions of circulating CD1656+ natural killer cells with estimated maximum reductions occurring at approximately 8shy10 weeks after initiation of therapy These changes generally resolved within 2-6 weeks after discontinuation of treatment Treatment with XELJANZ was associated with dose-dependent increases in B cell counts Changes in circulating T-lymphocyte counts and T-lymphocyte subsets (CD3+ CD4+ and CD8+) were small and inconsistent The clinical significance of these changes is unknown

Total serum IgG IgM and IgA levels after 6-month dosing in patients with rheumatoid arthritis were lower than placebo however changes were small and not dose-dependent

After treatment with XELJANZ in patients with rheumatoid arthritis rapid decreases in serum C-reactive protein (CRP) were observed and maintained throughout dosing Changes in CRP observed with XELJANZ treatment do not reverse fully within 2 weeks after discontinuation indicating a longer duration of pharmacodynamic activity compared to the pharmacokinetic half-life

123 Pharmacokinetics Following oral administration of XELJANZ peak plasma concentrations are reached within 05shy1 hour elimination half-life is ~3 hours and a dose-proportional increase in systemic exposure was observed in the therapeutic dose range Steady state concentrations are achieved in 24-48 hours with negligible accumulation after twice daily administration

Absorption The absolute oral bioavailability of tofacitinib is 74 Coadministration of XELJANZ with a high-fat meal resulted in no changes in AUC while Cmax was reduced by 32 In clinical trials XELJANZ was administered without regard to meals

Distribution After intravenous administration the volume of distribution is 87 L The protein binding of tofacitinib is ~40 Tofacitinib binds predominantly to albumin and does not appear to bind to 1-acid glycoprotein Tofacitinib distributes equally between red blood cells and plasma

Metabolism and Elimination Clearance mechanisms for tofacitinib are approximately 70 hepatic metabolism and 30 renal excretion of the parent drug The metabolism of tofacitinib is primarily mediated by CYP3A4 with minor contribution from CYP2C19 In a human radiolabeled study more than 65 of the total circulating radioactivity was accounted for by unchanged tofacitinib with the remaining

16

Reference ID 3213422

35 attributed to 8 metabolites each accounting for less than 8 of total radioactivity The pharmacologic activity of tofacitinib is attributed to the parent molecule

Pharmacokinetics in Rheumatoid Arthritis Patients Population PK analysis in rheumatoid arthritis patients indicated no clinically relevant change in tofacitinib exposure after accounting for differences in renal function (ie creatinine clearance) between patients based on age weight gender and race (Figure 1) An approximately linear relationship between body weight and volume of distribution was observed resulting in higher peak (Cmax) and lower trough (Cmin) concentrations in lighter patients However this difference is not considered to be clinically relevant The between-subject variability ( coefficient of variation) in AUC of tofacitinib is estimated to be approximately 27

Specific Populations The effect of renal and hepatic impairment and other intrinsic factors on the pharmacokinetics of tofacitinib is shown in Figure 1

17

Reference ID 3213422

Figure 1 Impact of Intrinsic Factors on Tofacitinib Pharmacokinetics

Intrinsic Factor

Weight = 40 kg

Weight = 140 kg

Age = 80 years

Female

Asian

Black

Hispanic

Renal Impairment (Mild)

Renal Impairment (Moderate)

Renal Impairment (Severe)

Hepatic Impairment (Mild)

Hepatic Impairment (Moderate)

PK

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

0

Ratio and 90 CI Recommendation

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

Reduce Dose to 5 mg Once Daily

Reduce Dose to 5 mg Once Daily

No Dose Adjustment

Reduce Dose to 5 mg Once Daily

05 1 15 2 25 3 35 4

Ratio relative to reference

Supplemental doses are not necessary in patients after dialysis

Reference values for weight age gender and race comparisons are 70 kg 55 years male and White respectively Reference groups for renal and hepatic impairment data are subjects with normal renal and hepatic function

Drug Interactions

Potential for XELJANZ to Influence the PK of Other Drugs In vitro studies indicate that tofacitinib does not significantly inhibit or induce the activity of the

18

Reference ID 3213422

major human drug-metabolizing CYPs (CYP1A2 CYP2B6 CYP2C8 CYP2C9 CYP2C19 CYP2D6 and CYP3A4) at concentrations exceeding 185 times the steady state Cmax of a 5 mg twice daily dose These in vitro results were confirmed by a human drug interaction study showing no changes in the PK of midazolam a highly sensitive CYP3A4 substrate when coadministered with XELJANZ

In rheumatoid arthritis patients the oral clearance of tofacitinib does not vary with time indicating that tofacitinib does not normalize CYP enzyme activity in rheumatoid arthritis patients Therefore coadministration with XELJANZ is not expected to result in clinically relevant increases in the metabolism of CYP substrates in rheumatoid arthritis patients

In vitro data indicate that the potential for tofacitinib to inhibit transporters such as Pshyglycoprotein organic anionic or cationic transporters at therapeutic concentrations is low

Dosing recommendations for coadministered drugs following administration with XELJANZ are shown in Figure 2

Figure 2 Impact of XELJANZ on PK of Other Drugs

Coadministered PK Drug

Methotrexate AUC

Cmax

CYP3A Substrate AUC Midazolam

Cmax

Oral ContraceptivesLevonorgestrel

AUC

Cmax

Ethinyl Estradiol AUC

Cmax

OCT amp MATE Substrate AUC Metformin

Cmax

Ratio and 90 CI Recommendation

No Dose Adjustment

No dose adjustment for CYP3A substrates such as midazolam

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

0 025 05 075 1 125 15 175 2

Ratio relative to reference

Note Reference group is administration of concomitant medication alone OCT = Organic Cationic Transporter MATE = Multidrug and Toxic Compound Extrusion

Potential for Other Drugs to Influence the PK of Tofacitinib Since tofacitinib is metabolized by CYP3A4 interaction with drugs that inhibit or induce CYP3A4 is likely Inhibitors of CYP2C19 alone or P-glycoprotein are unlikely to substantially alter the PK of tofacitinib Dosing recommendations for XELJANZ for administration with CYP inhibitors or inducers are shown in Figure 3

19

Reference ID 3213422

Figure 3 Impact of Other Drugs on PK of XELJANZ

Coadministered PK Drug

CYP3A Inhib itor AUC Ketoconazole

Cmax

CYP3A amp CYP2C19 Inhib itor AUC

Cmax Fluconazole

CYP Inducer Rifampin AUC

Cmax

Methotrexate AUC

Cmax

Tacrolimus AUC Cmax

Cyclosporine AUC

Cmax

Ratio and 90 CI Recommendation

Reduce XELJANZ Dose to 5 mg Once Daily

Reduce XELJANZ Dose to 5 mg Once Daily

May Decrease Efficacy

No Dose Adjustment

There is a risk of added immunosuppressionif XELJANZ is taken with Tacrolimus

There is a risk of added immunosuppressionif XELJANZ is taken with Cyclosporine

0 05 1 15 2 25

Ratio relative to reference

Note Reference group is administration of tofacitinib alone

13 NONCLINICAL TOXICOLOGY

131 Carcinogenesis Mutagenesis Impairment of Fertility In a 39-week toxicology study in monkeys tofacitinib at exposure levels approximately 6 times the MRHD (on an AUC basis at oral doses of 5 mgkg twice daily) produced lymphomas No lymphomas were observed in this study at exposure levels 1 times the MRHD (on an AUC basis at oral doses of 1 mgkg twice daily)

The carcinogenic potential of tofacitinib was assessed in 6-month rasH2 transgenic mouse carcinogenicity and 2-year rat carcinogenicity studies Tofacitinib at exposure levels approximately 34 times the MRHD (on an AUC basis at oral doses of 200 mgkgday) was not carcinogenic in mice

In the 24-month oral carcinogenicity study in Sprague-Dawley rats tofacitinib caused benign Leydig cell tumors hibernomas (malignancy of brown adipose tissue) and benign thymomas at doses greater than or equal to 30 mgkgday (approximately 42 times the exposure levels at the MRHD on an AUC basis) The relevance of benign Leydig cell tumors to human risk is not known

20

Reference ID 3213422

Tofacitinib was not mutagenic in the bacterial reverse mutation assay It was positive for clastogenicity in the in vitro chromosome aberration assay with human lymphocytes in the presence of metabolic enzymes but negative in the absence of metabolic enzymes Tofacitinib was negative in the in vivo rat micronucleus assay and in the in vitro CHO-HGPRT assay and the in vivo rat hepatocyte unscheduled DNA synthesis assay

In rats tofacitinib at exposure levels approximately 17 times the MRHD (on an AUC basis at oral doses of 10 mgkgday) reduced female fertility due to increased post-implantation loss There was no impairment of female rat fertility at exposure levels of tofacitinib equal to the MRHD (on an AUC basis at oral doses of 1 mgkgday) Tofacitinib exposure levels at approximately 133 times the MRHD (on an AUC basis at oral doses of 100 mgkgday) had no effect on male fertility sperm motility or sperm concentration

14 CLINICAL STUDIES The XELJANZ clinical development program included two dose-ranging trials and five confirmatory trials

DOSE-RANGING TRIALS Dose selection for XELJANZ was based on two pivotal dose-ranging trials

Dose-Ranging Study 1 was a 6-month monotherapy trial in 384 patients with active rheumatoid arthritis who had an inadequate response to a DMARD Patients who previously received adalimumab therapy were excluded Patients were randomized to 1 of 7 monotherapy treatments XELJANZ 1 3 5 10 or 15 mg twice daily adalimumab 40 mg subcutaneously every other week for 10 weeks followed by XELJANZ 5 mg twice daily for 3 months or placebo

Dose-Ranging Study 2 was a 6-month trial in which 507 patients with active rheumatoid arthritis who had an inadequate response to MTX alone received one of 6 dose regimens of XELJANZ (20 mg once daily 1 3 5 10 or 15 mg twice daily) or placebo added to background MTX

The results of XELJANZ-treated patients achieving ACR20 responses in Studies 1 and 2 are shown in Figure 4 Although a dose-response relationship was observed in Study 1 the proportion of patients with an ACR20 response did not clearly differ between the 10 mg and 15 mg doses Furthermore there was a smaller proportion of patients who responded to adalimumab monotherapy compared to those treated with XELJANZ doses 3 mg twice daily and greater In Study 2 a smaller proportion of patients achieved an ACR20 response in the placebo and XELJANZ 1 mg groups compared to patients treated with the other XELJANZ doses However there was no difference in the proportion of responders among patients treated with XELJANZ 3 5 10 15 mg twice daily or 20 mg once daily doses

21

Reference ID 3213422

Figure 4 Proportion of Patients with ACR20 Response at Month 3 in Dose-Ranging Studies 1 and 2

CONFIRMATORY TRIALS Study I was a 6-month monotherapy trial in which 610 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to a DMARD (nonbiologic or biologic) received XELJANZ 5 or 10 mg twice daily or placebo At the Month 3 visit all patients randomized to placebo treatment were advanced in a blinded fashion to a second predetermined treatment of XELJANZ 5 or 10 mg twice daily The primary endpoints at Month 3 were the proportion of patients who achieved an ACR20 response changes in Health Assessment Questionnaire ndash Disability Index (HAQ-DI) and rates of Disease Activity Score DAS28-4(ESR) less than 26

Study II was a 12-month trial in which 792 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to a nonbiologic DMARD received XELJANZ 5 or 10 mg twice daily or placebo added to background DMARD treatment (excluding potent immunosuppressive treatments such as azathioprine or cyclosporine) At the Month 3 visit nonresponding patients were advanced in a blinded fashion to a second predetermined treatment of XELJANZ 5 or 10 mg twice daily At the end of Month 6 all placebo patients were advanced to their second predetermined treatment in a blinded fashion The primary endpoints were the proportion of patients who achieved an ACR20 response at Month 6 changes in HAQ-DI at Month 3 and rates of DAS28-4(ESR) less than 26 at Month 6

Study III was a 12-month trial in 717 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to MTX Patients received XELJANZ 5 or 10 mg twice daily adalimumab 40 mg subcutaneously every other week or placebo added to background MTX

22

Reference ID 3213422

Placebo patients were advanced as in Study II The primary endpoints were the proportion of patients who achieved an ACR20 response at Month 6 HAQ-DI at Month 3 and DAS28-4(ESR) less than 26 at Month 6

Study IV is an ongoing 2-year trial with a planned analysis at 1 year in which 797 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to MTX received XELJANZ 5 or 10 mg twice daily or placebo added to background MTX Placebo patients were advanced as in Study II The primary endpoints were the proportion of patients who achieved an ACR20 response at Month 6 mean change from baseline in van der Heijde-modified total Sharp Score (mTSS) at Month 6 HAQ-DI at Month 3 and DAS28-4(ESR) less than 26 at Month 6

Study V was a 6-month trial in which 399 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to at least one approved TNF-inhibiting biologic agent received XELJANZ 5 or 10 mg twice daily or placebo added to background MTX At the Month 3 visit all patients randomized to placebo treatment were advanced in a blinded fashion to a second predetermined treatment of XELJANZ 5 or 10 mg twice daily The primary endpoints at Month 3 were the proportion of patients who achieved an ACR20 response HAQ-DI and DAS28-4(ESR) less than 26

Clinical Response The percentages of XELJANZ-treated patients achieving ACR20 ACR50 and ACR70 responses in Studies I IV and V are shown in Table 5 Similar results were observed with Studies II and III In all trials patients treated with either 5 or 10 mg twice daily XELJANZ had higher ACR20 ACR50 and ACR70 response rates versus placebo with or without background DMARD treatment at Month 3 and Month 6 Higher ACR20 response rates were observed within 2 weeks compared to placebo In the 12-month trials ACR response rates in XELJANZ-treated patients were consistent at 6 and 12 months

23

Reference ID 3213422

Table 5 Proportion of Patients with an ACR Response Percent of Patients

Monotherapy in Nonbiologic or Biologic DMARD Inadequate

Respondersc

MTX Inadequate Respondersd TNF Inhibitor Inadequate Responderse

Study I Study IV Study V

Na PBO

122

XELJANZ 5 mg Twice

Daily

243

XELJANZ 10 mg Twice Daily

245

PBO + MTX

160

XELJANZ 5 mg Twice

Daily + MTX

321

XELJANZ 10 mg Twice

Daily + MTX

316

PBO +

MTX

132

XELJANZ 5 mg Twice

Daily + MTX

133

XELJANZ 10 mg Twice

Daily + MTX

134 ACR20 Month 3 Month 6

26 NAb

59 69

65 70

27 25

55 50

67 62

24 NA

41 51

48 54

ACR50 Month 3 Month 6

12 NA

31 42

36 46

8 9

29 32

37 44

8 NA

26 37

28 30

ACR70 Month 3 Month 6

6 NA

15 22

20 29

3 1

11 14

17 23

2 NA

14 16

10 16

a N is number of randomized and treated patients b NA Not applicable as data for placebo treatment is not available beyond 3 months in Studies I and V due to placebo advancement c Inadequate response to at least one DMARD (biologic or nonbiologic) due to lack of efficacy or toxicity d Inadequate response to MTX defined as the presence of sufficient residual disease activity to meet the entry criteria e Inadequate response to a least one TNF inhibitor due to lack of efficacy andor intolerance

In Study IV a greater proportion of patients treated with XELJANZ 5 mg or 10 mg twice daily plus MTX achieved a low level of disease activity as measured by a DAS28-4(ESR) less than 26 at 6 months compared to those treated with MTX alone (Table 6)

24

Reference ID 3213422

Table 6 Proportion of Patients with DAS28-4(ESR) Less Than 26 with Number of Residual Active Joints Study IV DAS28-4(ESR) Less Than 26 Placebo + MTX

160

XELJANZ 5 mg Twice Daily + MTX

321

XELJANZ 10 mg Twice Daily + MTX

316 Proportion of responders at Month 6 (n) 1 (2) 6 (19) 13 (42)

Of responders proportion with 0 active joints (n)

50 (1) 42 (8) 36 (15)

Of responders proportion with 1 active joint (n) 0 5 (1) 17 (7) Of responders proportion with 2 active joints (n)

0 32 (6) 7 (3)

Of responders proportion with 3 or more active joints (n)

50 (1) 21 (4) 40 (17)

The results of the components of the ACR response criteria for Study IV are shown in Table 7 Similar results were observed in Studies I II III and V

Table 7 Components of ACR Response at 3 Months Study IV

XELJANZ

5 mg

Twice Daily + MTX

N=321

XELJANZ

10 mg

Twice Daily + MTX

N=316

Placebo + MTX

N=160

Component (mean) a Baseline Month 3a Baseline Month 3a Baseline Month 3a

Number of tender

joints 24 13 23 10 23 18

(0-68) (14) (14) (15) (12) (13) (14)

Number of swollen

joints 14 6 14 6 14 10

(0-66) (8) (8) (8) (7) (9) (9)

Painb 58

(23)

34

(23)

58

(24)

29

(22)

55

(24)

47

(24)

Patient global

assessmentb

58

(24)

35

(23)

57

(23)

29

(20)

54

(23)

47

(24)

Disability index

(HAQ-DI)c 141 099 140 084 132 119

(068) (065) (066) (064) (067) (068)

25

Reference ID 3213422

Physician global

assessmentb 59 30 58 24 56 43

(16) (19) (17) (17) (18) (22)

CRP (mgL) 153 71 171 44 137 146

(190) (191) (269) (86) (149) (187) aData shown is mean (Standard Deviation) at Month 3bVisual analog scale 0 = best 100 = worst cHealth Assessment Questionnaire Disability Index 0 = best 3 = worst 20 questions categories dressing and grooming arising eating walking hygiene reach grip and activities

The percent of ACR20 responders by visit for Study IV is shown in Figure 5 Similar responses were observed in Studies I II III and V

Figure 5 Percentage of ACR20 Responders by Visit for Study IV

Physical Function Response Improvement in physical functioning was measured by the HAQ-DI Patients receiving XELJANZ 5 and 10 mg twice daily demonstrated greater improvement from baseline in physical functioning compared to placebo at Month 3

The mean (95 CI) difference from placebo in HAQ-DI improvement from baseline at Month 3 in Study III was -022 (-035 -010) in patients receiving 5 mg XELJANZ twice daily and -032 (-044 -019) in patients receiving 10 mg XELJANZ twice daily Similar results were obtained in

26

Reference ID 3213422

Studies I II IV and V In the 12-month trials HAQ-DI results in XELJANZ-treated patients were consistent at 6 and 12 months

16 HOW SUPPLIEDSTORAGE AND HANDLING XELJANZ is provided as 5 mg tofacitinib (equivalent to 8 mg tofacitinib citrate) tablets White round immediate-release film-coated tablets debossed with ldquoPfizerrdquo on one side and ldquoJKI 5rdquo on the other side and available in

Bottles of 60 NDC 0069-1001-01 Bottles of 180 NDC 0069-1001-02

Storage and Handling Store at 20degC to 25degC (68degF to 77degF) [See USP Controlled Room Temperature]

Do not repackage

17 PATIENT COUNSELING INFORMATION See FDA-approved patient labeling (Medication Guide)

Inform patients of the availability of a Medication Guide and instruct them to read the Medication Guide prior to taking XELJANZ Instruct patients to take XELJANZ only as prescribed

This productrsquos label may have been updated For current full prescribing information please visit wwwpfizercom

LAB-0445-10

27

Reference ID 3213422

MEDICATION GUIDE

XELJANZ (ZELrsquo JANSrsquo) (tofacitinib)

Read this Medication Guide before you start taking XELJANZ and each time you get a refill There may be new information This Medication Guide does not take the place of talking to your healthcare provider about your medical condition or treatment

What is the most important information I should know about XELJANZ XELJANZ may cause serious side effects including

1 Serious infections

XELJANZ is a medicine that affects your immune system XELJANZ can lower the ability of your immune system to fight infections Some people have serious infections while taking XELJANZ including tuberculosis (TB) and infections caused by bacteria fungi or viruses that can spread throughout the body Some people have died from these infections Your healthcare provider should test you for TB before starting XELJANZ Your healthcare provider should monitor you closely for signs and symptoms of

TB infection during treatment with XELJANZ

You should not start taking XELJANZ if you have any kind of infection unless your healthcare provider tells you it is okay

Before starting XELJANZ tell your healthcare provider if you think you have an infection or have symptoms of an infection such as

o fever sweating or chills o warm red or painful skin o muscle aches or sores on your body o cough o diarrhea or stomach pain o shortness of breath o burning when you urinate o blood in phlegm or urinating more often o weight loss than normal

o feeling very tired are being treated for an infection get a lot of infections or have infections that keep coming back have diabetes HIV or a weak immune system People with these conditions

have a higher chance for infections have TB or have been in close contact with someone with TB live or have lived or have traveled to certain parts of the country (such as the

Ohio and Mississippi River valleys and the Southwest) where there is an increased chance for getting certain kinds of fungal infections (histoplasmosis coccidioidomycosis or blastomycosis) These infections may happen or become more severe if you use XELJANZ Ask your healthcare provider if you do not know if you have lived in an area where these infections are common

have or have had hepatitis B or C

28

Reference ID 3213422

After starting XELJANZ call your healthcare provider right away if you have any symptoms of an infection XELJANZ can make you more likely to get infections or make worse any infection that you have

2 Cancer and immune system problems

XELJANZ may increase your risk of certain cancers by changing the way your immune system works

Lymphoma and other cancers can happen in patients taking XELJANZ Tell your healthcare provider if you have ever had any type of cancer

Some people who have taken XELJANZ with certain other medicines to prevent kidney transplant rejection have had a problem with certain white blood cells growing out of control (Epstein Barr Virus-associated post transplant lymphoproliferative disorder)

3 Tears (perforation) in the stomach or intestines

Tell your healthcare provider if you have had diverticulitis (inflammation in parts of the large intestine) or ulcers in your stomach or intestines Some people taking XELJANZ get tears in their stomach or intestine This happens most often in people who also take nonsteroidal anti-inflammatory drugs (NSAIDs) corticosteroids or methotrexate

Tell your healthcare provider right away if you have fever and stomach-area pain that does not go away and a change in your bowel habits

4 Changes in certain laboratory test results Your healthcare provider should do blood tests before you start receiving XELJANZ and while you take XELJANZ to check for the following side effects

changes in lymphocyte counts Lymphocytes are white blood cells that help the body fight off infections

low neutrophil counts Neutrophils are white blood cells that help the body fight off infections

low red blood cell count This may mean that you have anemia which may make you feel weak and tired

Your healthcare provider should routinely check certain liver tests

You should not receive XELJANZ if your lymphocyte count neutrophil count or red blood cell count is too low or your liver tests are too high

Your healthcare provider may stop your XELJANZ treatment for a period of time if needed because of changes in these blood test results

29

Reference ID 3213422

You may also have changes in other laboratory tests such as your blood cholesterol levels Your healthcare provider should do blood tests to check your cholesterol levels 4 to 8 weeks after you start receiving XELJANZ and as needed after that Normal cholesterol levels are important to good heart health

See ldquoWhat are the possible side effects of XELJANZrdquo for more information about side effects

What is XELJANZ

XELJANZ is a prescription medicine called a Janus kinase (JAK) inhibitor XELJANZ is used to treat adults with moderately to severely active rheumatoid arthritis in which methotrexate did not work well

It is not known if XELJANZ is safe and effective in people with Hepatitis B or C

XELJANZ is not for people with severe liver problems

It is not known if XELJANZ is safe and effective in children

What should I tell my healthcare provider before taking XELJANZ

XELJANZ may not be right for you Before taking XELJANZ tell your healthcare provider if you have an infection See ldquoWhat is the most important information I should know

about XELJANZrdquo have liver problems have kidney problems have any stomach area (abdominal) pain or been diagnosed with diverticulitis or

ulcers in your stomach or intestines have had a reaction to tofacitinib or any of the ingredients in XELJANZ have recently received or are scheduled to receive a vaccine People who take

XELJANZ should not receive live vaccines People taking XELJANZ can receive non-live vaccines

have any other medical conditions plan to become pregnant or are pregnant It is not known if XELJANZ will harm

an unborn baby

Pregnancy Registry Pfizer has a registry for pregnant women who take XELJANZ The purpose of this registry is to check the health of the pregnant mother and her baby If you are pregnant or become pregnant while taking XELJANZ talk to your healthcare provider about how you can join this pregnancy registry or you may contact the registry at 1-877-311-8972 to enroll

plan to breastfeed or are breastfeeding You and your healthcare provider should decide if you will take XELJANZ or breastfeed You should not do both

30

Reference ID 3213422

Tell your healthcare provider about all the medicines you take including prescription and non-prescription medicines vitamins and herbal supplements XELJANZ and other medicines may affect each other causing side effects

Especially tell your healthcare provider if you take any other medicines to treat your rheumatoid arthritis You should not take

tocilizumab (Actemrareg) etanercept (Enbrelreg) adalimumab (Humirareg) infliximab (Remicadereg) rituximab (Rituxanreg) abatacept (Orenciareg) anakinra (Kineretreg) certolizumab (Cimziareg) golimumab (Simponireg) azathioprine cyclosporine or other immunosuppressive drugs while you are taking XELJANZ Taking XELJANZ with these medicines may increase your risk of infection

medicines that affect the way certain liver enzymes work Ask your healthcare provider if you are not sure if your medicine is one of these

Know the medicines you take Keep a list of them to show your healthcare provider and pharmacist when you get a new medicine

How should I take XELJANZ

Take XELJANZ as your healthcare provider tells you to take it

Take XELJANZ 2 times a day with or without food

If you take too much XELJANZ call your healthcare provider or go the nearest hospital emergency room right away

What are possible side effects of XELJANZ

XELJANZ may cause serious side effects including

See ldquoWhat is the most important information I should know about XELJANZrdquo

Hepatitis B or C activation infection in people who carry the virus in their blood If you are a carrier of the hepatitis B or C virus (viruses that affect the liver) the virus may become active while you use XELJANZ Your healthcare provider may do blood tests before you start treatment with XELJANZ and while you are using XELJANZ Tell your healthcare provider if you have any of the following symptoms of a possible hepatitis B or C infection

o feel very tired o fevers o skin or eyes look yellow o chills o little or no appetite o stomach discomfort o vomiting o muscle aches o clay-colored bowel o dark urine

movements o skin rash

31

Reference ID 3213422

Common side effects of XELJANZ include upper respiratory tract infections (common cold sinus infections) headache diarrhea nasal congestion sore throat and runny nose (nasopharyngitis)

Tell your healthcare provider if you have any side effect that bothers you or that does not go away

These are not all the possible side effects of XELJANZ For more information ask your healthcare provider or pharmacist

Call your doctor for medical advice about side effects You may report side effects to FDA at 1-800-FDA-1088

You may also report side effects to Pfizer at 1-800-438-1985

How should I store XELJANZ

Store XELJANZ at 68degF to 77degF (room temperature)

Safely throw away medicine that is out of date or no longer needed

Keep XELJANZ and all medicines out of the reach of children

General information about the safe and effective use of XELJANZ

Medicines are sometimes prescribed for purposes other than those listed in a Medication Guide Do not use XELJANZ for a condition for which it was not prescribed Do not give XELJANZ to other people even if they have the same symptoms you have It may harm them

This Medication Guide summarizes the most important information about XELJANZ If you would like more information talk to your healthcare provider You can ask your pharmacist or healthcare provider for information about XELJANZ that is written for health professionals

What are the ingredients in XELJANZ

Active ingredient tofacitinib citrate

Inactive ingredients microcrystalline cellulose lactose monohydrate croscarmellose sodium magnesium stearate HPMC 2910Hypromellose 6cP titanium dioxide macrogolPEG3350 and triacetin

32

Reference ID 3213422

This Medication Guide has been approved by the US Food and Drug Administration

LAB-0535-10 Issued November 2012

33

Reference ID 3213422

In the controlled background DMARD trials (0-3 months) ALT elevations greater than 3x ULN were observed in 10 13 and 12 of patients receiving placebo 5 mg and 10 mg twice daily respectively In these trials AST elevations greater than 3x ULN were observed in 06 05 and 04 of patients receiving placebo 5 mg and 10 mg twice daily respectively

One case of drug-induced liver injury was reported in a patient treated with XELJANZ 10 mg twice daily for approximately 25 months The patient developed symptomatic elevations of AST and ALT greater than 3x ULN and bilirubin elevations greater than 2x ULN which required hospitalizations and a liver biopsy

Lipids In the controlled clinical trials dose-related elevations in lipid parameters (total cholesterol LDL cholesterol HDL cholesterol triglycerides) were observed at one month of exposure and remained stable thereafter Changes in lipid parameters during the first 3 months of exposure in the controlled clinical trials are summarized below

bull Mean LDL cholesterol increased by 15 in the XELJANZ 5 mg twice daily arm and 19 in the XELJANZ 10 mg twice daily arm

bull Mean HDL cholesterol increased by 10 in the XELJANZ 5 mg twice daily arm and 12 in the XELJANZ 10 mg twice daily arm

bull Mean LDLHDL ratios were essentially unchanged in XELJANZ-treated patients

In a controlled clinical trial elevations in LDL cholesterol and ApoB decreased to pretreatment levels in response to statin therapy

In the long-term safety population elevations in lipid parameters remained consistent with what was seen in the controlled clinical trials

11

Reference ID 3213422

Serum Creatinine In the controlled clinical trials dose-related elevations in serum creatinine were observed with XELJANZ treatment The mean increase in serum creatinine was lt01 mgdL in the 12-month pooled safety analysis however with increasing duration of exposure in the long-term extensions up to 2 of patients were discontinued from XELJANZ treatment due to the protocol-specified discontinuation criterion of an increase in creatinine by more than 50 of baseline The clinical significance of the observed serum creatinine elevations is unknown

Other Adverse Reactions Adverse reactions occurring in 2 or more of patients on 5 mg twice daily or 10 mg twice daily XELJANZ and at least 1 greater than that observed in patients on placebo with or without DMARD are summarized in Table 4

Table 4 Adverse Reactions Occurring in at Least 2 or More of Patients on 5 or 10 mg Twice Daily XELJANZ With or Without DMARD (0-3 months) and at Least 1 Greater Than That Observed in Patients on Placebo

XELJANZ 5 mg Twice Daily

XELJANZ 10 mg Twice Daily

Placebo

Preferred Term N = 1336

() N = 1349

() N = 809

()

Diarrhea 40 29 23

Nasopharyngitis 38 28 28

Upper respiratory tract infection 45 38 33

Headache 43 34 21

Hypertension 16 23 11

N reflects randomized and treated patients from the seven clinical trials

Other adverse reactions occurring in controlled and open-label extension studies included

Blood and lymphatic system disorders Anemia Metabolism and nutrition disorders Dehydration Psychiatric disorders Insomnia Nervous system disorders Paresthesia Respiratory thoracic and mediastinal disorders Dyspnea cough sinus congestion Gastrointestinal disorders Abdominal pain dyspepsia vomiting gastritis nausea Hepatobiliary disorders Hepatic steatosis Skin and subcutaneous tissue disorders Rash erythema pruritus Musculoskeletal connective tissue and bone disorders Musculoskeletal pain arthralgia tendonitis joint swelling General disorders and administration site conditions Pyrexia fatigue peripheral edema

12

Reference ID 3213422

7 DRUG INTERACTIONS

71 Potent CYP3A4 Inhibitors Tofacitinib exposure is increased when XELJANZ is coadministered with potent inhibitors of cytochrome P450 (CYP) 3A4 (eg ketoconazole) [see Dosage and Administration (21) and Figure 3]

72 Moderate CYP3A4 and Potent CYP2C19 Inhibitors Tofacitinib exposure is increased when XELJANZ is coadministered with medications that result in both moderate inhibition of CYP3A4 and potent inhibition of CYP2C19 (eg fluconazole) [see Dosage and Administration (21) and Figure 3]

73 Potent CYP3A4 Inducers Tofacitinib exposure is decreased when XELJANZ is coadministered with potent CYP3A4 inducers (eg rifampin) [see Dosage and Administration (21) and Figure 3]

74 Immunosuppressive Drugs There is a risk of added immunosuppression when XELJANZ is coadministered with potent immunosuppressive drugs (eg azathioprine tacrolimus cyclosporine) Combined use of multiple-dose XELJANZ with potent immunosuppressives has not been studied in rheumatoid arthritis

8 USE IN SPECIFIC POPULATIONS

81 Pregnancy Teratogenic effects Pregnancy Category C There are no adequate and well-controlled studies in pregnant women XELJANZ should be used during pregnancy only if the potential benefit justifies the potential risk to the fetus Tofacitinib has been shown to be fetocidal and teratogenic in rats and rabbits when given at exposures 146 times and 13 times respectively the maximum recommended human dose (MRHD)

In a rat embryofetal developmental study tofacitinib was teratogenic at exposure levels approximately 146 times the MRHD (on an AUC basis at oral doses of 100 mgkgday) Teratogenic effects consisted of external and soft tissue malformations of anasarca and membranous ventricular septal defects respectively and skeletal malformations or variations (absent cervical arch bent femur fibula humerus radius scapula tibia and ulna sternoschisis absent rib misshapen femur branched rib fused rib fused sternebra and hemicentric thoracic centrum) In addition there was an increase in post-implantation loss consisting of early and late resorptions resulting in a reduced number of viable fetuses Mean fetal body weight was reduced No developmental toxicity was observed in rats at exposure levels approximately 58 times the MRHD (on an AUC basis at oral doses of 30 mgkgday) In the rabbit embryofetal developmental study tofacitinib was teratogenic at exposure levels approximately 13 times the MRHD (on an AUC basis at oral doses of 30 mgkgday) in the absence of signs of maternal toxicity Teratogenic effects included thoracogastroschisis omphalocele membranous ventricular septal defects and cranialskeletal malformations (microstomia microphthalmia)

13

Reference ID 3213422

mid-line and tail defects In addition there was an increase in post-implantation loss associated with late resorptions No developmental toxicity was observed in rabbits at exposure levels approximately 3 times the MRHD (on an AUC basis at oral doses of 10 mgkgday)

Nonteratogenic effects In a peri- and postnatal rat study there were reductions in live litter size postnatal survival and pup body weights at exposure levels approximately 73 times the MRHD (on an AUC basis at oral doses of 50 mgkgday) There was no effect on behavioral and learning assessments sexual maturation or the ability of the F1 generation rats to mate and produce viable F2 generation fetuses in rats at exposure levels approximately 17 times the MRHD (on an AUC basis at oral doses of 10 mgkgday)

Pregnancy Registry To monitor the outcomes of pregnant women exposed to XELJANZ a pregnancy registry has been established Physicians are encouraged to register patients and pregnant women are encouraged to register themselves by calling 1-877-311-8972

83 Nursing Mothers Tofacitinib was secreted in milk of lactating rats It is not known whether tofacitinib is excreted in human milk Because many drugs are excreted in human milk and because of the potential for serious adverse reactions in nursing infants from tofacitinib a decision should be made whether to discontinue nursing or to discontinue the drug taking into account the importance of the drug for the mother

84 Pediatric Use The safety and effectiveness of XELJANZ in pediatric patients have not been established

85 Geriatric Use Of the 3315 patients who enrolled in Studies I to V a total of 505 rheumatoid arthritis patients were 65 years of age and older including 71 patients 75 years and older The frequency of serious infection among XELJANZ-treated subjects 65 years of age and older was higher than among those under the age of 65 As there is a higher incidence of infections in the elderly population in general caution should be used when treating the elderly

86 Hepatic Impairment No dose adjustment is required in patients with mild hepatic impairment XELJANZ dose should be reduced to 5 mg once daily in patients with moderate hepatic impairment The safety and efficacy of XELJANZ have not been studied in patients with severe hepatic impairment or in patients with positive hepatitis B virus or hepatitis C virus serology [see Dosage and Administration (21) and Warnings and Precautions (56)]

87 Renal Impairment No dose adjustment is required in patients with mild renal impairment XELJANZ dose should be reduced to 5 mg once daily in patients with moderate and severe renal impairment [see Dosage and Administration (21)] In clinical trials XELJANZ was not evaluated in rheumatoid arthritis patients with baseline creatinine clearance values (estimated by the Cockroft-Gault equation) less than 40 mLmin

14

Reference ID 3213422

10 OVERDOSAGE Signs Symptoms and Laboratory Findings of Acute Overdosage in Humans There is no experience with overdose of XELJANZ

Treatment or Management of Overdose Pharmacokinetic data up to and including a single dose of 100 mg in healthy volunteers indicate that more than 95 of the administered dose is expected to be eliminated within 24 hours

There is no specific antidote for overdose with XELJANZ In case of an overdose it is recommended that the patient be monitored for signs and symptoms of adverse reactions Patients who develop adverse reactions should receive appropriate treatment

11 DESCRIPTION XELJANZ is the citrate salt of tofacitinib a JAK inhibitor

Tofacitinib citrate is a white to off-white powder with the following chemical name (3R4R)-4shymethyl-3-(methyl-7H-pyrrolo [23-d]pyrimidin-4-ylamino)-szlig-oxo-1-piperidinepropanenitrile 2shyhydroxy-123-propanetricarboxylate (11) It is freely soluble in water

Tofacitinib citrate has a molecular weight of 5045 Daltons (or 3124 Daltons as the tofacitinib free base) and a molecular formula of C16H20N6ObullC6H8O7 The chemical structure of tofacitinib citrate is

NN

Me

Me

N

N N H

O N

HO2C CO2H

HO2C

OH bull

XELJANZ is supplied for oral administration as 5 mg tofacitinib (equivalent to 8 mg tofacitinib citrate) white round immediate-release film-coated tablet Each tablet of XELJANZ contains the appropriate amount of XELJANZ as a citrate salt and the following inactive ingredients microcrystalline cellulose lactose monohydrate croscarmellose sodium magnesium stearate HPMC 2910Hypromellose 6cP titanium dioxide macrogolPEG3350 and triacetin

12 CLINICAL PHARMACOLOGY

121 Mechanism of Action Tofacitinib is a Janus kinase (JAK) inhibitor JAKs are intracellular enzymes which transmit signals arising from cytokine or growth factor-receptor interactions on the cellular membrane to influence cellular processes of hematopoiesis and immune cell function Within the signaling pathway JAKs phosphorylate and activate Signal Transducers and Activators of Transcription (STATs) which modulate intracellular activity including gene expression Tofacitinib modulates

15

Reference ID 3213422

the signaling pathway at the point of JAKs preventing the phosphorylation and activation of STATs JAK enzymes transmit cytokine signaling through pairing of JAKs (eg JAK1JAK3 JAK1JAK2 JAK1TyK2 JAK2JAK2) Tofacitinib inhibited the in vitro activities of JAK1JAK2 JAK1JAK3 and JAK2JAK2 combinations with IC50 of 406 56 and 1377 nM respectively However the relevance of specific JAK combinations to therapeutic effectiveness is not known

122 Pharmacodynamics Treatment with XELJANZ was associated with dose-dependent reductions of circulating CD1656+ natural killer cells with estimated maximum reductions occurring at approximately 8shy10 weeks after initiation of therapy These changes generally resolved within 2-6 weeks after discontinuation of treatment Treatment with XELJANZ was associated with dose-dependent increases in B cell counts Changes in circulating T-lymphocyte counts and T-lymphocyte subsets (CD3+ CD4+ and CD8+) were small and inconsistent The clinical significance of these changes is unknown

Total serum IgG IgM and IgA levels after 6-month dosing in patients with rheumatoid arthritis were lower than placebo however changes were small and not dose-dependent

After treatment with XELJANZ in patients with rheumatoid arthritis rapid decreases in serum C-reactive protein (CRP) were observed and maintained throughout dosing Changes in CRP observed with XELJANZ treatment do not reverse fully within 2 weeks after discontinuation indicating a longer duration of pharmacodynamic activity compared to the pharmacokinetic half-life

123 Pharmacokinetics Following oral administration of XELJANZ peak plasma concentrations are reached within 05shy1 hour elimination half-life is ~3 hours and a dose-proportional increase in systemic exposure was observed in the therapeutic dose range Steady state concentrations are achieved in 24-48 hours with negligible accumulation after twice daily administration

Absorption The absolute oral bioavailability of tofacitinib is 74 Coadministration of XELJANZ with a high-fat meal resulted in no changes in AUC while Cmax was reduced by 32 In clinical trials XELJANZ was administered without regard to meals

Distribution After intravenous administration the volume of distribution is 87 L The protein binding of tofacitinib is ~40 Tofacitinib binds predominantly to albumin and does not appear to bind to 1-acid glycoprotein Tofacitinib distributes equally between red blood cells and plasma

Metabolism and Elimination Clearance mechanisms for tofacitinib are approximately 70 hepatic metabolism and 30 renal excretion of the parent drug The metabolism of tofacitinib is primarily mediated by CYP3A4 with minor contribution from CYP2C19 In a human radiolabeled study more than 65 of the total circulating radioactivity was accounted for by unchanged tofacitinib with the remaining

16

Reference ID 3213422

35 attributed to 8 metabolites each accounting for less than 8 of total radioactivity The pharmacologic activity of tofacitinib is attributed to the parent molecule

Pharmacokinetics in Rheumatoid Arthritis Patients Population PK analysis in rheumatoid arthritis patients indicated no clinically relevant change in tofacitinib exposure after accounting for differences in renal function (ie creatinine clearance) between patients based on age weight gender and race (Figure 1) An approximately linear relationship between body weight and volume of distribution was observed resulting in higher peak (Cmax) and lower trough (Cmin) concentrations in lighter patients However this difference is not considered to be clinically relevant The between-subject variability ( coefficient of variation) in AUC of tofacitinib is estimated to be approximately 27

Specific Populations The effect of renal and hepatic impairment and other intrinsic factors on the pharmacokinetics of tofacitinib is shown in Figure 1

17

Reference ID 3213422

Figure 1 Impact of Intrinsic Factors on Tofacitinib Pharmacokinetics

Intrinsic Factor

Weight = 40 kg

Weight = 140 kg

Age = 80 years

Female

Asian

Black

Hispanic

Renal Impairment (Mild)

Renal Impairment (Moderate)

Renal Impairment (Severe)

Hepatic Impairment (Mild)

Hepatic Impairment (Moderate)

PK

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

0

Ratio and 90 CI Recommendation

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

Reduce Dose to 5 mg Once Daily

Reduce Dose to 5 mg Once Daily

No Dose Adjustment

Reduce Dose to 5 mg Once Daily

05 1 15 2 25 3 35 4

Ratio relative to reference

Supplemental doses are not necessary in patients after dialysis

Reference values for weight age gender and race comparisons are 70 kg 55 years male and White respectively Reference groups for renal and hepatic impairment data are subjects with normal renal and hepatic function

Drug Interactions

Potential for XELJANZ to Influence the PK of Other Drugs In vitro studies indicate that tofacitinib does not significantly inhibit or induce the activity of the

18

Reference ID 3213422

major human drug-metabolizing CYPs (CYP1A2 CYP2B6 CYP2C8 CYP2C9 CYP2C19 CYP2D6 and CYP3A4) at concentrations exceeding 185 times the steady state Cmax of a 5 mg twice daily dose These in vitro results were confirmed by a human drug interaction study showing no changes in the PK of midazolam a highly sensitive CYP3A4 substrate when coadministered with XELJANZ

In rheumatoid arthritis patients the oral clearance of tofacitinib does not vary with time indicating that tofacitinib does not normalize CYP enzyme activity in rheumatoid arthritis patients Therefore coadministration with XELJANZ is not expected to result in clinically relevant increases in the metabolism of CYP substrates in rheumatoid arthritis patients

In vitro data indicate that the potential for tofacitinib to inhibit transporters such as Pshyglycoprotein organic anionic or cationic transporters at therapeutic concentrations is low

Dosing recommendations for coadministered drugs following administration with XELJANZ are shown in Figure 2

Figure 2 Impact of XELJANZ on PK of Other Drugs

Coadministered PK Drug

Methotrexate AUC

Cmax

CYP3A Substrate AUC Midazolam

Cmax

Oral ContraceptivesLevonorgestrel

AUC

Cmax

Ethinyl Estradiol AUC

Cmax

OCT amp MATE Substrate AUC Metformin

Cmax

Ratio and 90 CI Recommendation

No Dose Adjustment

No dose adjustment for CYP3A substrates such as midazolam

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

0 025 05 075 1 125 15 175 2

Ratio relative to reference

Note Reference group is administration of concomitant medication alone OCT = Organic Cationic Transporter MATE = Multidrug and Toxic Compound Extrusion

Potential for Other Drugs to Influence the PK of Tofacitinib Since tofacitinib is metabolized by CYP3A4 interaction with drugs that inhibit or induce CYP3A4 is likely Inhibitors of CYP2C19 alone or P-glycoprotein are unlikely to substantially alter the PK of tofacitinib Dosing recommendations for XELJANZ for administration with CYP inhibitors or inducers are shown in Figure 3

19

Reference ID 3213422

Figure 3 Impact of Other Drugs on PK of XELJANZ

Coadministered PK Drug

CYP3A Inhib itor AUC Ketoconazole

Cmax

CYP3A amp CYP2C19 Inhib itor AUC

Cmax Fluconazole

CYP Inducer Rifampin AUC

Cmax

Methotrexate AUC

Cmax

Tacrolimus AUC Cmax

Cyclosporine AUC

Cmax

Ratio and 90 CI Recommendation

Reduce XELJANZ Dose to 5 mg Once Daily

Reduce XELJANZ Dose to 5 mg Once Daily

May Decrease Efficacy

No Dose Adjustment

There is a risk of added immunosuppressionif XELJANZ is taken with Tacrolimus

There is a risk of added immunosuppressionif XELJANZ is taken with Cyclosporine

0 05 1 15 2 25

Ratio relative to reference

Note Reference group is administration of tofacitinib alone

13 NONCLINICAL TOXICOLOGY

131 Carcinogenesis Mutagenesis Impairment of Fertility In a 39-week toxicology study in monkeys tofacitinib at exposure levels approximately 6 times the MRHD (on an AUC basis at oral doses of 5 mgkg twice daily) produced lymphomas No lymphomas were observed in this study at exposure levels 1 times the MRHD (on an AUC basis at oral doses of 1 mgkg twice daily)

The carcinogenic potential of tofacitinib was assessed in 6-month rasH2 transgenic mouse carcinogenicity and 2-year rat carcinogenicity studies Tofacitinib at exposure levels approximately 34 times the MRHD (on an AUC basis at oral doses of 200 mgkgday) was not carcinogenic in mice

In the 24-month oral carcinogenicity study in Sprague-Dawley rats tofacitinib caused benign Leydig cell tumors hibernomas (malignancy of brown adipose tissue) and benign thymomas at doses greater than or equal to 30 mgkgday (approximately 42 times the exposure levels at the MRHD on an AUC basis) The relevance of benign Leydig cell tumors to human risk is not known

20

Reference ID 3213422

Tofacitinib was not mutagenic in the bacterial reverse mutation assay It was positive for clastogenicity in the in vitro chromosome aberration assay with human lymphocytes in the presence of metabolic enzymes but negative in the absence of metabolic enzymes Tofacitinib was negative in the in vivo rat micronucleus assay and in the in vitro CHO-HGPRT assay and the in vivo rat hepatocyte unscheduled DNA synthesis assay

In rats tofacitinib at exposure levels approximately 17 times the MRHD (on an AUC basis at oral doses of 10 mgkgday) reduced female fertility due to increased post-implantation loss There was no impairment of female rat fertility at exposure levels of tofacitinib equal to the MRHD (on an AUC basis at oral doses of 1 mgkgday) Tofacitinib exposure levels at approximately 133 times the MRHD (on an AUC basis at oral doses of 100 mgkgday) had no effect on male fertility sperm motility or sperm concentration

14 CLINICAL STUDIES The XELJANZ clinical development program included two dose-ranging trials and five confirmatory trials

DOSE-RANGING TRIALS Dose selection for XELJANZ was based on two pivotal dose-ranging trials

Dose-Ranging Study 1 was a 6-month monotherapy trial in 384 patients with active rheumatoid arthritis who had an inadequate response to a DMARD Patients who previously received adalimumab therapy were excluded Patients were randomized to 1 of 7 monotherapy treatments XELJANZ 1 3 5 10 or 15 mg twice daily adalimumab 40 mg subcutaneously every other week for 10 weeks followed by XELJANZ 5 mg twice daily for 3 months or placebo

Dose-Ranging Study 2 was a 6-month trial in which 507 patients with active rheumatoid arthritis who had an inadequate response to MTX alone received one of 6 dose regimens of XELJANZ (20 mg once daily 1 3 5 10 or 15 mg twice daily) or placebo added to background MTX

The results of XELJANZ-treated patients achieving ACR20 responses in Studies 1 and 2 are shown in Figure 4 Although a dose-response relationship was observed in Study 1 the proportion of patients with an ACR20 response did not clearly differ between the 10 mg and 15 mg doses Furthermore there was a smaller proportion of patients who responded to adalimumab monotherapy compared to those treated with XELJANZ doses 3 mg twice daily and greater In Study 2 a smaller proportion of patients achieved an ACR20 response in the placebo and XELJANZ 1 mg groups compared to patients treated with the other XELJANZ doses However there was no difference in the proportion of responders among patients treated with XELJANZ 3 5 10 15 mg twice daily or 20 mg once daily doses

21

Reference ID 3213422

Figure 4 Proportion of Patients with ACR20 Response at Month 3 in Dose-Ranging Studies 1 and 2

CONFIRMATORY TRIALS Study I was a 6-month monotherapy trial in which 610 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to a DMARD (nonbiologic or biologic) received XELJANZ 5 or 10 mg twice daily or placebo At the Month 3 visit all patients randomized to placebo treatment were advanced in a blinded fashion to a second predetermined treatment of XELJANZ 5 or 10 mg twice daily The primary endpoints at Month 3 were the proportion of patients who achieved an ACR20 response changes in Health Assessment Questionnaire ndash Disability Index (HAQ-DI) and rates of Disease Activity Score DAS28-4(ESR) less than 26

Study II was a 12-month trial in which 792 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to a nonbiologic DMARD received XELJANZ 5 or 10 mg twice daily or placebo added to background DMARD treatment (excluding potent immunosuppressive treatments such as azathioprine or cyclosporine) At the Month 3 visit nonresponding patients were advanced in a blinded fashion to a second predetermined treatment of XELJANZ 5 or 10 mg twice daily At the end of Month 6 all placebo patients were advanced to their second predetermined treatment in a blinded fashion The primary endpoints were the proportion of patients who achieved an ACR20 response at Month 6 changes in HAQ-DI at Month 3 and rates of DAS28-4(ESR) less than 26 at Month 6

Study III was a 12-month trial in 717 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to MTX Patients received XELJANZ 5 or 10 mg twice daily adalimumab 40 mg subcutaneously every other week or placebo added to background MTX

22

Reference ID 3213422

Placebo patients were advanced as in Study II The primary endpoints were the proportion of patients who achieved an ACR20 response at Month 6 HAQ-DI at Month 3 and DAS28-4(ESR) less than 26 at Month 6

Study IV is an ongoing 2-year trial with a planned analysis at 1 year in which 797 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to MTX received XELJANZ 5 or 10 mg twice daily or placebo added to background MTX Placebo patients were advanced as in Study II The primary endpoints were the proportion of patients who achieved an ACR20 response at Month 6 mean change from baseline in van der Heijde-modified total Sharp Score (mTSS) at Month 6 HAQ-DI at Month 3 and DAS28-4(ESR) less than 26 at Month 6

Study V was a 6-month trial in which 399 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to at least one approved TNF-inhibiting biologic agent received XELJANZ 5 or 10 mg twice daily or placebo added to background MTX At the Month 3 visit all patients randomized to placebo treatment were advanced in a blinded fashion to a second predetermined treatment of XELJANZ 5 or 10 mg twice daily The primary endpoints at Month 3 were the proportion of patients who achieved an ACR20 response HAQ-DI and DAS28-4(ESR) less than 26

Clinical Response The percentages of XELJANZ-treated patients achieving ACR20 ACR50 and ACR70 responses in Studies I IV and V are shown in Table 5 Similar results were observed with Studies II and III In all trials patients treated with either 5 or 10 mg twice daily XELJANZ had higher ACR20 ACR50 and ACR70 response rates versus placebo with or without background DMARD treatment at Month 3 and Month 6 Higher ACR20 response rates were observed within 2 weeks compared to placebo In the 12-month trials ACR response rates in XELJANZ-treated patients were consistent at 6 and 12 months

23

Reference ID 3213422

Table 5 Proportion of Patients with an ACR Response Percent of Patients

Monotherapy in Nonbiologic or Biologic DMARD Inadequate

Respondersc

MTX Inadequate Respondersd TNF Inhibitor Inadequate Responderse

Study I Study IV Study V

Na PBO

122

XELJANZ 5 mg Twice

Daily

243

XELJANZ 10 mg Twice Daily

245

PBO + MTX

160

XELJANZ 5 mg Twice

Daily + MTX

321

XELJANZ 10 mg Twice

Daily + MTX

316

PBO +

MTX

132

XELJANZ 5 mg Twice

Daily + MTX

133

XELJANZ 10 mg Twice

Daily + MTX

134 ACR20 Month 3 Month 6

26 NAb

59 69

65 70

27 25

55 50

67 62

24 NA

41 51

48 54

ACR50 Month 3 Month 6

12 NA

31 42

36 46

8 9

29 32

37 44

8 NA

26 37

28 30

ACR70 Month 3 Month 6

6 NA

15 22

20 29

3 1

11 14

17 23

2 NA

14 16

10 16

a N is number of randomized and treated patients b NA Not applicable as data for placebo treatment is not available beyond 3 months in Studies I and V due to placebo advancement c Inadequate response to at least one DMARD (biologic or nonbiologic) due to lack of efficacy or toxicity d Inadequate response to MTX defined as the presence of sufficient residual disease activity to meet the entry criteria e Inadequate response to a least one TNF inhibitor due to lack of efficacy andor intolerance

In Study IV a greater proportion of patients treated with XELJANZ 5 mg or 10 mg twice daily plus MTX achieved a low level of disease activity as measured by a DAS28-4(ESR) less than 26 at 6 months compared to those treated with MTX alone (Table 6)

24

Reference ID 3213422

Table 6 Proportion of Patients with DAS28-4(ESR) Less Than 26 with Number of Residual Active Joints Study IV DAS28-4(ESR) Less Than 26 Placebo + MTX

160

XELJANZ 5 mg Twice Daily + MTX

321

XELJANZ 10 mg Twice Daily + MTX

316 Proportion of responders at Month 6 (n) 1 (2) 6 (19) 13 (42)

Of responders proportion with 0 active joints (n)

50 (1) 42 (8) 36 (15)

Of responders proportion with 1 active joint (n) 0 5 (1) 17 (7) Of responders proportion with 2 active joints (n)

0 32 (6) 7 (3)

Of responders proportion with 3 or more active joints (n)

50 (1) 21 (4) 40 (17)

The results of the components of the ACR response criteria for Study IV are shown in Table 7 Similar results were observed in Studies I II III and V

Table 7 Components of ACR Response at 3 Months Study IV

XELJANZ

5 mg

Twice Daily + MTX

N=321

XELJANZ

10 mg

Twice Daily + MTX

N=316

Placebo + MTX

N=160

Component (mean) a Baseline Month 3a Baseline Month 3a Baseline Month 3a

Number of tender

joints 24 13 23 10 23 18

(0-68) (14) (14) (15) (12) (13) (14)

Number of swollen

joints 14 6 14 6 14 10

(0-66) (8) (8) (8) (7) (9) (9)

Painb 58

(23)

34

(23)

58

(24)

29

(22)

55

(24)

47

(24)

Patient global

assessmentb

58

(24)

35

(23)

57

(23)

29

(20)

54

(23)

47

(24)

Disability index

(HAQ-DI)c 141 099 140 084 132 119

(068) (065) (066) (064) (067) (068)

25

Reference ID 3213422

Physician global

assessmentb 59 30 58 24 56 43

(16) (19) (17) (17) (18) (22)

CRP (mgL) 153 71 171 44 137 146

(190) (191) (269) (86) (149) (187) aData shown is mean (Standard Deviation) at Month 3bVisual analog scale 0 = best 100 = worst cHealth Assessment Questionnaire Disability Index 0 = best 3 = worst 20 questions categories dressing and grooming arising eating walking hygiene reach grip and activities

The percent of ACR20 responders by visit for Study IV is shown in Figure 5 Similar responses were observed in Studies I II III and V

Figure 5 Percentage of ACR20 Responders by Visit for Study IV

Physical Function Response Improvement in physical functioning was measured by the HAQ-DI Patients receiving XELJANZ 5 and 10 mg twice daily demonstrated greater improvement from baseline in physical functioning compared to placebo at Month 3

The mean (95 CI) difference from placebo in HAQ-DI improvement from baseline at Month 3 in Study III was -022 (-035 -010) in patients receiving 5 mg XELJANZ twice daily and -032 (-044 -019) in patients receiving 10 mg XELJANZ twice daily Similar results were obtained in

26

Reference ID 3213422

Studies I II IV and V In the 12-month trials HAQ-DI results in XELJANZ-treated patients were consistent at 6 and 12 months

16 HOW SUPPLIEDSTORAGE AND HANDLING XELJANZ is provided as 5 mg tofacitinib (equivalent to 8 mg tofacitinib citrate) tablets White round immediate-release film-coated tablets debossed with ldquoPfizerrdquo on one side and ldquoJKI 5rdquo on the other side and available in

Bottles of 60 NDC 0069-1001-01 Bottles of 180 NDC 0069-1001-02

Storage and Handling Store at 20degC to 25degC (68degF to 77degF) [See USP Controlled Room Temperature]

Do not repackage

17 PATIENT COUNSELING INFORMATION See FDA-approved patient labeling (Medication Guide)

Inform patients of the availability of a Medication Guide and instruct them to read the Medication Guide prior to taking XELJANZ Instruct patients to take XELJANZ only as prescribed

This productrsquos label may have been updated For current full prescribing information please visit wwwpfizercom

LAB-0445-10

27

Reference ID 3213422

MEDICATION GUIDE

XELJANZ (ZELrsquo JANSrsquo) (tofacitinib)

Read this Medication Guide before you start taking XELJANZ and each time you get a refill There may be new information This Medication Guide does not take the place of talking to your healthcare provider about your medical condition or treatment

What is the most important information I should know about XELJANZ XELJANZ may cause serious side effects including

1 Serious infections

XELJANZ is a medicine that affects your immune system XELJANZ can lower the ability of your immune system to fight infections Some people have serious infections while taking XELJANZ including tuberculosis (TB) and infections caused by bacteria fungi or viruses that can spread throughout the body Some people have died from these infections Your healthcare provider should test you for TB before starting XELJANZ Your healthcare provider should monitor you closely for signs and symptoms of

TB infection during treatment with XELJANZ

You should not start taking XELJANZ if you have any kind of infection unless your healthcare provider tells you it is okay

Before starting XELJANZ tell your healthcare provider if you think you have an infection or have symptoms of an infection such as

o fever sweating or chills o warm red or painful skin o muscle aches or sores on your body o cough o diarrhea or stomach pain o shortness of breath o burning when you urinate o blood in phlegm or urinating more often o weight loss than normal

o feeling very tired are being treated for an infection get a lot of infections or have infections that keep coming back have diabetes HIV or a weak immune system People with these conditions

have a higher chance for infections have TB or have been in close contact with someone with TB live or have lived or have traveled to certain parts of the country (such as the

Ohio and Mississippi River valleys and the Southwest) where there is an increased chance for getting certain kinds of fungal infections (histoplasmosis coccidioidomycosis or blastomycosis) These infections may happen or become more severe if you use XELJANZ Ask your healthcare provider if you do not know if you have lived in an area where these infections are common

have or have had hepatitis B or C

28

Reference ID 3213422

After starting XELJANZ call your healthcare provider right away if you have any symptoms of an infection XELJANZ can make you more likely to get infections or make worse any infection that you have

2 Cancer and immune system problems

XELJANZ may increase your risk of certain cancers by changing the way your immune system works

Lymphoma and other cancers can happen in patients taking XELJANZ Tell your healthcare provider if you have ever had any type of cancer

Some people who have taken XELJANZ with certain other medicines to prevent kidney transplant rejection have had a problem with certain white blood cells growing out of control (Epstein Barr Virus-associated post transplant lymphoproliferative disorder)

3 Tears (perforation) in the stomach or intestines

Tell your healthcare provider if you have had diverticulitis (inflammation in parts of the large intestine) or ulcers in your stomach or intestines Some people taking XELJANZ get tears in their stomach or intestine This happens most often in people who also take nonsteroidal anti-inflammatory drugs (NSAIDs) corticosteroids or methotrexate

Tell your healthcare provider right away if you have fever and stomach-area pain that does not go away and a change in your bowel habits

4 Changes in certain laboratory test results Your healthcare provider should do blood tests before you start receiving XELJANZ and while you take XELJANZ to check for the following side effects

changes in lymphocyte counts Lymphocytes are white blood cells that help the body fight off infections

low neutrophil counts Neutrophils are white blood cells that help the body fight off infections

low red blood cell count This may mean that you have anemia which may make you feel weak and tired

Your healthcare provider should routinely check certain liver tests

You should not receive XELJANZ if your lymphocyte count neutrophil count or red blood cell count is too low or your liver tests are too high

Your healthcare provider may stop your XELJANZ treatment for a period of time if needed because of changes in these blood test results

29

Reference ID 3213422

You may also have changes in other laboratory tests such as your blood cholesterol levels Your healthcare provider should do blood tests to check your cholesterol levels 4 to 8 weeks after you start receiving XELJANZ and as needed after that Normal cholesterol levels are important to good heart health

See ldquoWhat are the possible side effects of XELJANZrdquo for more information about side effects

What is XELJANZ

XELJANZ is a prescription medicine called a Janus kinase (JAK) inhibitor XELJANZ is used to treat adults with moderately to severely active rheumatoid arthritis in which methotrexate did not work well

It is not known if XELJANZ is safe and effective in people with Hepatitis B or C

XELJANZ is not for people with severe liver problems

It is not known if XELJANZ is safe and effective in children

What should I tell my healthcare provider before taking XELJANZ

XELJANZ may not be right for you Before taking XELJANZ tell your healthcare provider if you have an infection See ldquoWhat is the most important information I should know

about XELJANZrdquo have liver problems have kidney problems have any stomach area (abdominal) pain or been diagnosed with diverticulitis or

ulcers in your stomach or intestines have had a reaction to tofacitinib or any of the ingredients in XELJANZ have recently received or are scheduled to receive a vaccine People who take

XELJANZ should not receive live vaccines People taking XELJANZ can receive non-live vaccines

have any other medical conditions plan to become pregnant or are pregnant It is not known if XELJANZ will harm

an unborn baby

Pregnancy Registry Pfizer has a registry for pregnant women who take XELJANZ The purpose of this registry is to check the health of the pregnant mother and her baby If you are pregnant or become pregnant while taking XELJANZ talk to your healthcare provider about how you can join this pregnancy registry or you may contact the registry at 1-877-311-8972 to enroll

plan to breastfeed or are breastfeeding You and your healthcare provider should decide if you will take XELJANZ or breastfeed You should not do both

30

Reference ID 3213422

Tell your healthcare provider about all the medicines you take including prescription and non-prescription medicines vitamins and herbal supplements XELJANZ and other medicines may affect each other causing side effects

Especially tell your healthcare provider if you take any other medicines to treat your rheumatoid arthritis You should not take

tocilizumab (Actemrareg) etanercept (Enbrelreg) adalimumab (Humirareg) infliximab (Remicadereg) rituximab (Rituxanreg) abatacept (Orenciareg) anakinra (Kineretreg) certolizumab (Cimziareg) golimumab (Simponireg) azathioprine cyclosporine or other immunosuppressive drugs while you are taking XELJANZ Taking XELJANZ with these medicines may increase your risk of infection

medicines that affect the way certain liver enzymes work Ask your healthcare provider if you are not sure if your medicine is one of these

Know the medicines you take Keep a list of them to show your healthcare provider and pharmacist when you get a new medicine

How should I take XELJANZ

Take XELJANZ as your healthcare provider tells you to take it

Take XELJANZ 2 times a day with or without food

If you take too much XELJANZ call your healthcare provider or go the nearest hospital emergency room right away

What are possible side effects of XELJANZ

XELJANZ may cause serious side effects including

See ldquoWhat is the most important information I should know about XELJANZrdquo

Hepatitis B or C activation infection in people who carry the virus in their blood If you are a carrier of the hepatitis B or C virus (viruses that affect the liver) the virus may become active while you use XELJANZ Your healthcare provider may do blood tests before you start treatment with XELJANZ and while you are using XELJANZ Tell your healthcare provider if you have any of the following symptoms of a possible hepatitis B or C infection

o feel very tired o fevers o skin or eyes look yellow o chills o little or no appetite o stomach discomfort o vomiting o muscle aches o clay-colored bowel o dark urine

movements o skin rash

31

Reference ID 3213422

Common side effects of XELJANZ include upper respiratory tract infections (common cold sinus infections) headache diarrhea nasal congestion sore throat and runny nose (nasopharyngitis)

Tell your healthcare provider if you have any side effect that bothers you or that does not go away

These are not all the possible side effects of XELJANZ For more information ask your healthcare provider or pharmacist

Call your doctor for medical advice about side effects You may report side effects to FDA at 1-800-FDA-1088

You may also report side effects to Pfizer at 1-800-438-1985

How should I store XELJANZ

Store XELJANZ at 68degF to 77degF (room temperature)

Safely throw away medicine that is out of date or no longer needed

Keep XELJANZ and all medicines out of the reach of children

General information about the safe and effective use of XELJANZ

Medicines are sometimes prescribed for purposes other than those listed in a Medication Guide Do not use XELJANZ for a condition for which it was not prescribed Do not give XELJANZ to other people even if they have the same symptoms you have It may harm them

This Medication Guide summarizes the most important information about XELJANZ If you would like more information talk to your healthcare provider You can ask your pharmacist or healthcare provider for information about XELJANZ that is written for health professionals

What are the ingredients in XELJANZ

Active ingredient tofacitinib citrate

Inactive ingredients microcrystalline cellulose lactose monohydrate croscarmellose sodium magnesium stearate HPMC 2910Hypromellose 6cP titanium dioxide macrogolPEG3350 and triacetin

32

Reference ID 3213422

This Medication Guide has been approved by the US Food and Drug Administration

LAB-0535-10 Issued November 2012

33

Reference ID 3213422

Serum Creatinine In the controlled clinical trials dose-related elevations in serum creatinine were observed with XELJANZ treatment The mean increase in serum creatinine was lt01 mgdL in the 12-month pooled safety analysis however with increasing duration of exposure in the long-term extensions up to 2 of patients were discontinued from XELJANZ treatment due to the protocol-specified discontinuation criterion of an increase in creatinine by more than 50 of baseline The clinical significance of the observed serum creatinine elevations is unknown

Other Adverse Reactions Adverse reactions occurring in 2 or more of patients on 5 mg twice daily or 10 mg twice daily XELJANZ and at least 1 greater than that observed in patients on placebo with or without DMARD are summarized in Table 4

Table 4 Adverse Reactions Occurring in at Least 2 or More of Patients on 5 or 10 mg Twice Daily XELJANZ With or Without DMARD (0-3 months) and at Least 1 Greater Than That Observed in Patients on Placebo

XELJANZ 5 mg Twice Daily

XELJANZ 10 mg Twice Daily

Placebo

Preferred Term N = 1336

() N = 1349

() N = 809

()

Diarrhea 40 29 23

Nasopharyngitis 38 28 28

Upper respiratory tract infection 45 38 33

Headache 43 34 21

Hypertension 16 23 11

N reflects randomized and treated patients from the seven clinical trials

Other adverse reactions occurring in controlled and open-label extension studies included

Blood and lymphatic system disorders Anemia Metabolism and nutrition disorders Dehydration Psychiatric disorders Insomnia Nervous system disorders Paresthesia Respiratory thoracic and mediastinal disorders Dyspnea cough sinus congestion Gastrointestinal disorders Abdominal pain dyspepsia vomiting gastritis nausea Hepatobiliary disorders Hepatic steatosis Skin and subcutaneous tissue disorders Rash erythema pruritus Musculoskeletal connective tissue and bone disorders Musculoskeletal pain arthralgia tendonitis joint swelling General disorders and administration site conditions Pyrexia fatigue peripheral edema

12

Reference ID 3213422

7 DRUG INTERACTIONS

71 Potent CYP3A4 Inhibitors Tofacitinib exposure is increased when XELJANZ is coadministered with potent inhibitors of cytochrome P450 (CYP) 3A4 (eg ketoconazole) [see Dosage and Administration (21) and Figure 3]

72 Moderate CYP3A4 and Potent CYP2C19 Inhibitors Tofacitinib exposure is increased when XELJANZ is coadministered with medications that result in both moderate inhibition of CYP3A4 and potent inhibition of CYP2C19 (eg fluconazole) [see Dosage and Administration (21) and Figure 3]

73 Potent CYP3A4 Inducers Tofacitinib exposure is decreased when XELJANZ is coadministered with potent CYP3A4 inducers (eg rifampin) [see Dosage and Administration (21) and Figure 3]

74 Immunosuppressive Drugs There is a risk of added immunosuppression when XELJANZ is coadministered with potent immunosuppressive drugs (eg azathioprine tacrolimus cyclosporine) Combined use of multiple-dose XELJANZ with potent immunosuppressives has not been studied in rheumatoid arthritis

8 USE IN SPECIFIC POPULATIONS

81 Pregnancy Teratogenic effects Pregnancy Category C There are no adequate and well-controlled studies in pregnant women XELJANZ should be used during pregnancy only if the potential benefit justifies the potential risk to the fetus Tofacitinib has been shown to be fetocidal and teratogenic in rats and rabbits when given at exposures 146 times and 13 times respectively the maximum recommended human dose (MRHD)

In a rat embryofetal developmental study tofacitinib was teratogenic at exposure levels approximately 146 times the MRHD (on an AUC basis at oral doses of 100 mgkgday) Teratogenic effects consisted of external and soft tissue malformations of anasarca and membranous ventricular septal defects respectively and skeletal malformations or variations (absent cervical arch bent femur fibula humerus radius scapula tibia and ulna sternoschisis absent rib misshapen femur branched rib fused rib fused sternebra and hemicentric thoracic centrum) In addition there was an increase in post-implantation loss consisting of early and late resorptions resulting in a reduced number of viable fetuses Mean fetal body weight was reduced No developmental toxicity was observed in rats at exposure levels approximately 58 times the MRHD (on an AUC basis at oral doses of 30 mgkgday) In the rabbit embryofetal developmental study tofacitinib was teratogenic at exposure levels approximately 13 times the MRHD (on an AUC basis at oral doses of 30 mgkgday) in the absence of signs of maternal toxicity Teratogenic effects included thoracogastroschisis omphalocele membranous ventricular septal defects and cranialskeletal malformations (microstomia microphthalmia)

13

Reference ID 3213422

mid-line and tail defects In addition there was an increase in post-implantation loss associated with late resorptions No developmental toxicity was observed in rabbits at exposure levels approximately 3 times the MRHD (on an AUC basis at oral doses of 10 mgkgday)

Nonteratogenic effects In a peri- and postnatal rat study there were reductions in live litter size postnatal survival and pup body weights at exposure levels approximately 73 times the MRHD (on an AUC basis at oral doses of 50 mgkgday) There was no effect on behavioral and learning assessments sexual maturation or the ability of the F1 generation rats to mate and produce viable F2 generation fetuses in rats at exposure levels approximately 17 times the MRHD (on an AUC basis at oral doses of 10 mgkgday)

Pregnancy Registry To monitor the outcomes of pregnant women exposed to XELJANZ a pregnancy registry has been established Physicians are encouraged to register patients and pregnant women are encouraged to register themselves by calling 1-877-311-8972

83 Nursing Mothers Tofacitinib was secreted in milk of lactating rats It is not known whether tofacitinib is excreted in human milk Because many drugs are excreted in human milk and because of the potential for serious adverse reactions in nursing infants from tofacitinib a decision should be made whether to discontinue nursing or to discontinue the drug taking into account the importance of the drug for the mother

84 Pediatric Use The safety and effectiveness of XELJANZ in pediatric patients have not been established

85 Geriatric Use Of the 3315 patients who enrolled in Studies I to V a total of 505 rheumatoid arthritis patients were 65 years of age and older including 71 patients 75 years and older The frequency of serious infection among XELJANZ-treated subjects 65 years of age and older was higher than among those under the age of 65 As there is a higher incidence of infections in the elderly population in general caution should be used when treating the elderly

86 Hepatic Impairment No dose adjustment is required in patients with mild hepatic impairment XELJANZ dose should be reduced to 5 mg once daily in patients with moderate hepatic impairment The safety and efficacy of XELJANZ have not been studied in patients with severe hepatic impairment or in patients with positive hepatitis B virus or hepatitis C virus serology [see Dosage and Administration (21) and Warnings and Precautions (56)]

87 Renal Impairment No dose adjustment is required in patients with mild renal impairment XELJANZ dose should be reduced to 5 mg once daily in patients with moderate and severe renal impairment [see Dosage and Administration (21)] In clinical trials XELJANZ was not evaluated in rheumatoid arthritis patients with baseline creatinine clearance values (estimated by the Cockroft-Gault equation) less than 40 mLmin

14

Reference ID 3213422

10 OVERDOSAGE Signs Symptoms and Laboratory Findings of Acute Overdosage in Humans There is no experience with overdose of XELJANZ

Treatment or Management of Overdose Pharmacokinetic data up to and including a single dose of 100 mg in healthy volunteers indicate that more than 95 of the administered dose is expected to be eliminated within 24 hours

There is no specific antidote for overdose with XELJANZ In case of an overdose it is recommended that the patient be monitored for signs and symptoms of adverse reactions Patients who develop adverse reactions should receive appropriate treatment

11 DESCRIPTION XELJANZ is the citrate salt of tofacitinib a JAK inhibitor

Tofacitinib citrate is a white to off-white powder with the following chemical name (3R4R)-4shymethyl-3-(methyl-7H-pyrrolo [23-d]pyrimidin-4-ylamino)-szlig-oxo-1-piperidinepropanenitrile 2shyhydroxy-123-propanetricarboxylate (11) It is freely soluble in water

Tofacitinib citrate has a molecular weight of 5045 Daltons (or 3124 Daltons as the tofacitinib free base) and a molecular formula of C16H20N6ObullC6H8O7 The chemical structure of tofacitinib citrate is

NN

Me

Me

N

N N H

O N

HO2C CO2H

HO2C

OH bull

XELJANZ is supplied for oral administration as 5 mg tofacitinib (equivalent to 8 mg tofacitinib citrate) white round immediate-release film-coated tablet Each tablet of XELJANZ contains the appropriate amount of XELJANZ as a citrate salt and the following inactive ingredients microcrystalline cellulose lactose monohydrate croscarmellose sodium magnesium stearate HPMC 2910Hypromellose 6cP titanium dioxide macrogolPEG3350 and triacetin

12 CLINICAL PHARMACOLOGY

121 Mechanism of Action Tofacitinib is a Janus kinase (JAK) inhibitor JAKs are intracellular enzymes which transmit signals arising from cytokine or growth factor-receptor interactions on the cellular membrane to influence cellular processes of hematopoiesis and immune cell function Within the signaling pathway JAKs phosphorylate and activate Signal Transducers and Activators of Transcription (STATs) which modulate intracellular activity including gene expression Tofacitinib modulates

15

Reference ID 3213422

the signaling pathway at the point of JAKs preventing the phosphorylation and activation of STATs JAK enzymes transmit cytokine signaling through pairing of JAKs (eg JAK1JAK3 JAK1JAK2 JAK1TyK2 JAK2JAK2) Tofacitinib inhibited the in vitro activities of JAK1JAK2 JAK1JAK3 and JAK2JAK2 combinations with IC50 of 406 56 and 1377 nM respectively However the relevance of specific JAK combinations to therapeutic effectiveness is not known

122 Pharmacodynamics Treatment with XELJANZ was associated with dose-dependent reductions of circulating CD1656+ natural killer cells with estimated maximum reductions occurring at approximately 8shy10 weeks after initiation of therapy These changes generally resolved within 2-6 weeks after discontinuation of treatment Treatment with XELJANZ was associated with dose-dependent increases in B cell counts Changes in circulating T-lymphocyte counts and T-lymphocyte subsets (CD3+ CD4+ and CD8+) were small and inconsistent The clinical significance of these changes is unknown

Total serum IgG IgM and IgA levels after 6-month dosing in patients with rheumatoid arthritis were lower than placebo however changes were small and not dose-dependent

After treatment with XELJANZ in patients with rheumatoid arthritis rapid decreases in serum C-reactive protein (CRP) were observed and maintained throughout dosing Changes in CRP observed with XELJANZ treatment do not reverse fully within 2 weeks after discontinuation indicating a longer duration of pharmacodynamic activity compared to the pharmacokinetic half-life

123 Pharmacokinetics Following oral administration of XELJANZ peak plasma concentrations are reached within 05shy1 hour elimination half-life is ~3 hours and a dose-proportional increase in systemic exposure was observed in the therapeutic dose range Steady state concentrations are achieved in 24-48 hours with negligible accumulation after twice daily administration

Absorption The absolute oral bioavailability of tofacitinib is 74 Coadministration of XELJANZ with a high-fat meal resulted in no changes in AUC while Cmax was reduced by 32 In clinical trials XELJANZ was administered without regard to meals

Distribution After intravenous administration the volume of distribution is 87 L The protein binding of tofacitinib is ~40 Tofacitinib binds predominantly to albumin and does not appear to bind to 1-acid glycoprotein Tofacitinib distributes equally between red blood cells and plasma

Metabolism and Elimination Clearance mechanisms for tofacitinib are approximately 70 hepatic metabolism and 30 renal excretion of the parent drug The metabolism of tofacitinib is primarily mediated by CYP3A4 with minor contribution from CYP2C19 In a human radiolabeled study more than 65 of the total circulating radioactivity was accounted for by unchanged tofacitinib with the remaining

16

Reference ID 3213422

35 attributed to 8 metabolites each accounting for less than 8 of total radioactivity The pharmacologic activity of tofacitinib is attributed to the parent molecule

Pharmacokinetics in Rheumatoid Arthritis Patients Population PK analysis in rheumatoid arthritis patients indicated no clinically relevant change in tofacitinib exposure after accounting for differences in renal function (ie creatinine clearance) between patients based on age weight gender and race (Figure 1) An approximately linear relationship between body weight and volume of distribution was observed resulting in higher peak (Cmax) and lower trough (Cmin) concentrations in lighter patients However this difference is not considered to be clinically relevant The between-subject variability ( coefficient of variation) in AUC of tofacitinib is estimated to be approximately 27

Specific Populations The effect of renal and hepatic impairment and other intrinsic factors on the pharmacokinetics of tofacitinib is shown in Figure 1

17

Reference ID 3213422

Figure 1 Impact of Intrinsic Factors on Tofacitinib Pharmacokinetics

Intrinsic Factor

Weight = 40 kg

Weight = 140 kg

Age = 80 years

Female

Asian

Black

Hispanic

Renal Impairment (Mild)

Renal Impairment (Moderate)

Renal Impairment (Severe)

Hepatic Impairment (Mild)

Hepatic Impairment (Moderate)

PK

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

0

Ratio and 90 CI Recommendation

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

Reduce Dose to 5 mg Once Daily

Reduce Dose to 5 mg Once Daily

No Dose Adjustment

Reduce Dose to 5 mg Once Daily

05 1 15 2 25 3 35 4

Ratio relative to reference

Supplemental doses are not necessary in patients after dialysis

Reference values for weight age gender and race comparisons are 70 kg 55 years male and White respectively Reference groups for renal and hepatic impairment data are subjects with normal renal and hepatic function

Drug Interactions

Potential for XELJANZ to Influence the PK of Other Drugs In vitro studies indicate that tofacitinib does not significantly inhibit or induce the activity of the

18

Reference ID 3213422

major human drug-metabolizing CYPs (CYP1A2 CYP2B6 CYP2C8 CYP2C9 CYP2C19 CYP2D6 and CYP3A4) at concentrations exceeding 185 times the steady state Cmax of a 5 mg twice daily dose These in vitro results were confirmed by a human drug interaction study showing no changes in the PK of midazolam a highly sensitive CYP3A4 substrate when coadministered with XELJANZ

In rheumatoid arthritis patients the oral clearance of tofacitinib does not vary with time indicating that tofacitinib does not normalize CYP enzyme activity in rheumatoid arthritis patients Therefore coadministration with XELJANZ is not expected to result in clinically relevant increases in the metabolism of CYP substrates in rheumatoid arthritis patients

In vitro data indicate that the potential for tofacitinib to inhibit transporters such as Pshyglycoprotein organic anionic or cationic transporters at therapeutic concentrations is low

Dosing recommendations for coadministered drugs following administration with XELJANZ are shown in Figure 2

Figure 2 Impact of XELJANZ on PK of Other Drugs

Coadministered PK Drug

Methotrexate AUC

Cmax

CYP3A Substrate AUC Midazolam

Cmax

Oral ContraceptivesLevonorgestrel

AUC

Cmax

Ethinyl Estradiol AUC

Cmax

OCT amp MATE Substrate AUC Metformin

Cmax

Ratio and 90 CI Recommendation

No Dose Adjustment

No dose adjustment for CYP3A substrates such as midazolam

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

0 025 05 075 1 125 15 175 2

Ratio relative to reference

Note Reference group is administration of concomitant medication alone OCT = Organic Cationic Transporter MATE = Multidrug and Toxic Compound Extrusion

Potential for Other Drugs to Influence the PK of Tofacitinib Since tofacitinib is metabolized by CYP3A4 interaction with drugs that inhibit or induce CYP3A4 is likely Inhibitors of CYP2C19 alone or P-glycoprotein are unlikely to substantially alter the PK of tofacitinib Dosing recommendations for XELJANZ for administration with CYP inhibitors or inducers are shown in Figure 3

19

Reference ID 3213422

Figure 3 Impact of Other Drugs on PK of XELJANZ

Coadministered PK Drug

CYP3A Inhib itor AUC Ketoconazole

Cmax

CYP3A amp CYP2C19 Inhib itor AUC

Cmax Fluconazole

CYP Inducer Rifampin AUC

Cmax

Methotrexate AUC

Cmax

Tacrolimus AUC Cmax

Cyclosporine AUC

Cmax

Ratio and 90 CI Recommendation

Reduce XELJANZ Dose to 5 mg Once Daily

Reduce XELJANZ Dose to 5 mg Once Daily

May Decrease Efficacy

No Dose Adjustment

There is a risk of added immunosuppressionif XELJANZ is taken with Tacrolimus

There is a risk of added immunosuppressionif XELJANZ is taken with Cyclosporine

0 05 1 15 2 25

Ratio relative to reference

Note Reference group is administration of tofacitinib alone

13 NONCLINICAL TOXICOLOGY

131 Carcinogenesis Mutagenesis Impairment of Fertility In a 39-week toxicology study in monkeys tofacitinib at exposure levels approximately 6 times the MRHD (on an AUC basis at oral doses of 5 mgkg twice daily) produced lymphomas No lymphomas were observed in this study at exposure levels 1 times the MRHD (on an AUC basis at oral doses of 1 mgkg twice daily)

The carcinogenic potential of tofacitinib was assessed in 6-month rasH2 transgenic mouse carcinogenicity and 2-year rat carcinogenicity studies Tofacitinib at exposure levels approximately 34 times the MRHD (on an AUC basis at oral doses of 200 mgkgday) was not carcinogenic in mice

In the 24-month oral carcinogenicity study in Sprague-Dawley rats tofacitinib caused benign Leydig cell tumors hibernomas (malignancy of brown adipose tissue) and benign thymomas at doses greater than or equal to 30 mgkgday (approximately 42 times the exposure levels at the MRHD on an AUC basis) The relevance of benign Leydig cell tumors to human risk is not known

20

Reference ID 3213422

Tofacitinib was not mutagenic in the bacterial reverse mutation assay It was positive for clastogenicity in the in vitro chromosome aberration assay with human lymphocytes in the presence of metabolic enzymes but negative in the absence of metabolic enzymes Tofacitinib was negative in the in vivo rat micronucleus assay and in the in vitro CHO-HGPRT assay and the in vivo rat hepatocyte unscheduled DNA synthesis assay

In rats tofacitinib at exposure levels approximately 17 times the MRHD (on an AUC basis at oral doses of 10 mgkgday) reduced female fertility due to increased post-implantation loss There was no impairment of female rat fertility at exposure levels of tofacitinib equal to the MRHD (on an AUC basis at oral doses of 1 mgkgday) Tofacitinib exposure levels at approximately 133 times the MRHD (on an AUC basis at oral doses of 100 mgkgday) had no effect on male fertility sperm motility or sperm concentration

14 CLINICAL STUDIES The XELJANZ clinical development program included two dose-ranging trials and five confirmatory trials

DOSE-RANGING TRIALS Dose selection for XELJANZ was based on two pivotal dose-ranging trials

Dose-Ranging Study 1 was a 6-month monotherapy trial in 384 patients with active rheumatoid arthritis who had an inadequate response to a DMARD Patients who previously received adalimumab therapy were excluded Patients were randomized to 1 of 7 monotherapy treatments XELJANZ 1 3 5 10 or 15 mg twice daily adalimumab 40 mg subcutaneously every other week for 10 weeks followed by XELJANZ 5 mg twice daily for 3 months or placebo

Dose-Ranging Study 2 was a 6-month trial in which 507 patients with active rheumatoid arthritis who had an inadequate response to MTX alone received one of 6 dose regimens of XELJANZ (20 mg once daily 1 3 5 10 or 15 mg twice daily) or placebo added to background MTX

The results of XELJANZ-treated patients achieving ACR20 responses in Studies 1 and 2 are shown in Figure 4 Although a dose-response relationship was observed in Study 1 the proportion of patients with an ACR20 response did not clearly differ between the 10 mg and 15 mg doses Furthermore there was a smaller proportion of patients who responded to adalimumab monotherapy compared to those treated with XELJANZ doses 3 mg twice daily and greater In Study 2 a smaller proportion of patients achieved an ACR20 response in the placebo and XELJANZ 1 mg groups compared to patients treated with the other XELJANZ doses However there was no difference in the proportion of responders among patients treated with XELJANZ 3 5 10 15 mg twice daily or 20 mg once daily doses

21

Reference ID 3213422

Figure 4 Proportion of Patients with ACR20 Response at Month 3 in Dose-Ranging Studies 1 and 2

CONFIRMATORY TRIALS Study I was a 6-month monotherapy trial in which 610 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to a DMARD (nonbiologic or biologic) received XELJANZ 5 or 10 mg twice daily or placebo At the Month 3 visit all patients randomized to placebo treatment were advanced in a blinded fashion to a second predetermined treatment of XELJANZ 5 or 10 mg twice daily The primary endpoints at Month 3 were the proportion of patients who achieved an ACR20 response changes in Health Assessment Questionnaire ndash Disability Index (HAQ-DI) and rates of Disease Activity Score DAS28-4(ESR) less than 26

Study II was a 12-month trial in which 792 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to a nonbiologic DMARD received XELJANZ 5 or 10 mg twice daily or placebo added to background DMARD treatment (excluding potent immunosuppressive treatments such as azathioprine or cyclosporine) At the Month 3 visit nonresponding patients were advanced in a blinded fashion to a second predetermined treatment of XELJANZ 5 or 10 mg twice daily At the end of Month 6 all placebo patients were advanced to their second predetermined treatment in a blinded fashion The primary endpoints were the proportion of patients who achieved an ACR20 response at Month 6 changes in HAQ-DI at Month 3 and rates of DAS28-4(ESR) less than 26 at Month 6

Study III was a 12-month trial in 717 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to MTX Patients received XELJANZ 5 or 10 mg twice daily adalimumab 40 mg subcutaneously every other week or placebo added to background MTX

22

Reference ID 3213422

Placebo patients were advanced as in Study II The primary endpoints were the proportion of patients who achieved an ACR20 response at Month 6 HAQ-DI at Month 3 and DAS28-4(ESR) less than 26 at Month 6

Study IV is an ongoing 2-year trial with a planned analysis at 1 year in which 797 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to MTX received XELJANZ 5 or 10 mg twice daily or placebo added to background MTX Placebo patients were advanced as in Study II The primary endpoints were the proportion of patients who achieved an ACR20 response at Month 6 mean change from baseline in van der Heijde-modified total Sharp Score (mTSS) at Month 6 HAQ-DI at Month 3 and DAS28-4(ESR) less than 26 at Month 6

Study V was a 6-month trial in which 399 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to at least one approved TNF-inhibiting biologic agent received XELJANZ 5 or 10 mg twice daily or placebo added to background MTX At the Month 3 visit all patients randomized to placebo treatment were advanced in a blinded fashion to a second predetermined treatment of XELJANZ 5 or 10 mg twice daily The primary endpoints at Month 3 were the proportion of patients who achieved an ACR20 response HAQ-DI and DAS28-4(ESR) less than 26

Clinical Response The percentages of XELJANZ-treated patients achieving ACR20 ACR50 and ACR70 responses in Studies I IV and V are shown in Table 5 Similar results were observed with Studies II and III In all trials patients treated with either 5 or 10 mg twice daily XELJANZ had higher ACR20 ACR50 and ACR70 response rates versus placebo with or without background DMARD treatment at Month 3 and Month 6 Higher ACR20 response rates were observed within 2 weeks compared to placebo In the 12-month trials ACR response rates in XELJANZ-treated patients were consistent at 6 and 12 months

23

Reference ID 3213422

Table 5 Proportion of Patients with an ACR Response Percent of Patients

Monotherapy in Nonbiologic or Biologic DMARD Inadequate

Respondersc

MTX Inadequate Respondersd TNF Inhibitor Inadequate Responderse

Study I Study IV Study V

Na PBO

122

XELJANZ 5 mg Twice

Daily

243

XELJANZ 10 mg Twice Daily

245

PBO + MTX

160

XELJANZ 5 mg Twice

Daily + MTX

321

XELJANZ 10 mg Twice

Daily + MTX

316

PBO +

MTX

132

XELJANZ 5 mg Twice

Daily + MTX

133

XELJANZ 10 mg Twice

Daily + MTX

134 ACR20 Month 3 Month 6

26 NAb

59 69

65 70

27 25

55 50

67 62

24 NA

41 51

48 54

ACR50 Month 3 Month 6

12 NA

31 42

36 46

8 9

29 32

37 44

8 NA

26 37

28 30

ACR70 Month 3 Month 6

6 NA

15 22

20 29

3 1

11 14

17 23

2 NA

14 16

10 16

a N is number of randomized and treated patients b NA Not applicable as data for placebo treatment is not available beyond 3 months in Studies I and V due to placebo advancement c Inadequate response to at least one DMARD (biologic or nonbiologic) due to lack of efficacy or toxicity d Inadequate response to MTX defined as the presence of sufficient residual disease activity to meet the entry criteria e Inadequate response to a least one TNF inhibitor due to lack of efficacy andor intolerance

In Study IV a greater proportion of patients treated with XELJANZ 5 mg or 10 mg twice daily plus MTX achieved a low level of disease activity as measured by a DAS28-4(ESR) less than 26 at 6 months compared to those treated with MTX alone (Table 6)

24

Reference ID 3213422

Table 6 Proportion of Patients with DAS28-4(ESR) Less Than 26 with Number of Residual Active Joints Study IV DAS28-4(ESR) Less Than 26 Placebo + MTX

160

XELJANZ 5 mg Twice Daily + MTX

321

XELJANZ 10 mg Twice Daily + MTX

316 Proportion of responders at Month 6 (n) 1 (2) 6 (19) 13 (42)

Of responders proportion with 0 active joints (n)

50 (1) 42 (8) 36 (15)

Of responders proportion with 1 active joint (n) 0 5 (1) 17 (7) Of responders proportion with 2 active joints (n)

0 32 (6) 7 (3)

Of responders proportion with 3 or more active joints (n)

50 (1) 21 (4) 40 (17)

The results of the components of the ACR response criteria for Study IV are shown in Table 7 Similar results were observed in Studies I II III and V

Table 7 Components of ACR Response at 3 Months Study IV

XELJANZ

5 mg

Twice Daily + MTX

N=321

XELJANZ

10 mg

Twice Daily + MTX

N=316

Placebo + MTX

N=160

Component (mean) a Baseline Month 3a Baseline Month 3a Baseline Month 3a

Number of tender

joints 24 13 23 10 23 18

(0-68) (14) (14) (15) (12) (13) (14)

Number of swollen

joints 14 6 14 6 14 10

(0-66) (8) (8) (8) (7) (9) (9)

Painb 58

(23)

34

(23)

58

(24)

29

(22)

55

(24)

47

(24)

Patient global

assessmentb

58

(24)

35

(23)

57

(23)

29

(20)

54

(23)

47

(24)

Disability index

(HAQ-DI)c 141 099 140 084 132 119

(068) (065) (066) (064) (067) (068)

25

Reference ID 3213422

Physician global

assessmentb 59 30 58 24 56 43

(16) (19) (17) (17) (18) (22)

CRP (mgL) 153 71 171 44 137 146

(190) (191) (269) (86) (149) (187) aData shown is mean (Standard Deviation) at Month 3bVisual analog scale 0 = best 100 = worst cHealth Assessment Questionnaire Disability Index 0 = best 3 = worst 20 questions categories dressing and grooming arising eating walking hygiene reach grip and activities

The percent of ACR20 responders by visit for Study IV is shown in Figure 5 Similar responses were observed in Studies I II III and V

Figure 5 Percentage of ACR20 Responders by Visit for Study IV

Physical Function Response Improvement in physical functioning was measured by the HAQ-DI Patients receiving XELJANZ 5 and 10 mg twice daily demonstrated greater improvement from baseline in physical functioning compared to placebo at Month 3

The mean (95 CI) difference from placebo in HAQ-DI improvement from baseline at Month 3 in Study III was -022 (-035 -010) in patients receiving 5 mg XELJANZ twice daily and -032 (-044 -019) in patients receiving 10 mg XELJANZ twice daily Similar results were obtained in

26

Reference ID 3213422

Studies I II IV and V In the 12-month trials HAQ-DI results in XELJANZ-treated patients were consistent at 6 and 12 months

16 HOW SUPPLIEDSTORAGE AND HANDLING XELJANZ is provided as 5 mg tofacitinib (equivalent to 8 mg tofacitinib citrate) tablets White round immediate-release film-coated tablets debossed with ldquoPfizerrdquo on one side and ldquoJKI 5rdquo on the other side and available in

Bottles of 60 NDC 0069-1001-01 Bottles of 180 NDC 0069-1001-02

Storage and Handling Store at 20degC to 25degC (68degF to 77degF) [See USP Controlled Room Temperature]

Do not repackage

17 PATIENT COUNSELING INFORMATION See FDA-approved patient labeling (Medication Guide)

Inform patients of the availability of a Medication Guide and instruct them to read the Medication Guide prior to taking XELJANZ Instruct patients to take XELJANZ only as prescribed

This productrsquos label may have been updated For current full prescribing information please visit wwwpfizercom

LAB-0445-10

27

Reference ID 3213422

MEDICATION GUIDE

XELJANZ (ZELrsquo JANSrsquo) (tofacitinib)

Read this Medication Guide before you start taking XELJANZ and each time you get a refill There may be new information This Medication Guide does not take the place of talking to your healthcare provider about your medical condition or treatment

What is the most important information I should know about XELJANZ XELJANZ may cause serious side effects including

1 Serious infections

XELJANZ is a medicine that affects your immune system XELJANZ can lower the ability of your immune system to fight infections Some people have serious infections while taking XELJANZ including tuberculosis (TB) and infections caused by bacteria fungi or viruses that can spread throughout the body Some people have died from these infections Your healthcare provider should test you for TB before starting XELJANZ Your healthcare provider should monitor you closely for signs and symptoms of

TB infection during treatment with XELJANZ

You should not start taking XELJANZ if you have any kind of infection unless your healthcare provider tells you it is okay

Before starting XELJANZ tell your healthcare provider if you think you have an infection or have symptoms of an infection such as

o fever sweating or chills o warm red or painful skin o muscle aches or sores on your body o cough o diarrhea or stomach pain o shortness of breath o burning when you urinate o blood in phlegm or urinating more often o weight loss than normal

o feeling very tired are being treated for an infection get a lot of infections or have infections that keep coming back have diabetes HIV or a weak immune system People with these conditions

have a higher chance for infections have TB or have been in close contact with someone with TB live or have lived or have traveled to certain parts of the country (such as the

Ohio and Mississippi River valleys and the Southwest) where there is an increased chance for getting certain kinds of fungal infections (histoplasmosis coccidioidomycosis or blastomycosis) These infections may happen or become more severe if you use XELJANZ Ask your healthcare provider if you do not know if you have lived in an area where these infections are common

have or have had hepatitis B or C

28

Reference ID 3213422

After starting XELJANZ call your healthcare provider right away if you have any symptoms of an infection XELJANZ can make you more likely to get infections or make worse any infection that you have

2 Cancer and immune system problems

XELJANZ may increase your risk of certain cancers by changing the way your immune system works

Lymphoma and other cancers can happen in patients taking XELJANZ Tell your healthcare provider if you have ever had any type of cancer

Some people who have taken XELJANZ with certain other medicines to prevent kidney transplant rejection have had a problem with certain white blood cells growing out of control (Epstein Barr Virus-associated post transplant lymphoproliferative disorder)

3 Tears (perforation) in the stomach or intestines

Tell your healthcare provider if you have had diverticulitis (inflammation in parts of the large intestine) or ulcers in your stomach or intestines Some people taking XELJANZ get tears in their stomach or intestine This happens most often in people who also take nonsteroidal anti-inflammatory drugs (NSAIDs) corticosteroids or methotrexate

Tell your healthcare provider right away if you have fever and stomach-area pain that does not go away and a change in your bowel habits

4 Changes in certain laboratory test results Your healthcare provider should do blood tests before you start receiving XELJANZ and while you take XELJANZ to check for the following side effects

changes in lymphocyte counts Lymphocytes are white blood cells that help the body fight off infections

low neutrophil counts Neutrophils are white blood cells that help the body fight off infections

low red blood cell count This may mean that you have anemia which may make you feel weak and tired

Your healthcare provider should routinely check certain liver tests

You should not receive XELJANZ if your lymphocyte count neutrophil count or red blood cell count is too low or your liver tests are too high

Your healthcare provider may stop your XELJANZ treatment for a period of time if needed because of changes in these blood test results

29

Reference ID 3213422

You may also have changes in other laboratory tests such as your blood cholesterol levels Your healthcare provider should do blood tests to check your cholesterol levels 4 to 8 weeks after you start receiving XELJANZ and as needed after that Normal cholesterol levels are important to good heart health

See ldquoWhat are the possible side effects of XELJANZrdquo for more information about side effects

What is XELJANZ

XELJANZ is a prescription medicine called a Janus kinase (JAK) inhibitor XELJANZ is used to treat adults with moderately to severely active rheumatoid arthritis in which methotrexate did not work well

It is not known if XELJANZ is safe and effective in people with Hepatitis B or C

XELJANZ is not for people with severe liver problems

It is not known if XELJANZ is safe and effective in children

What should I tell my healthcare provider before taking XELJANZ

XELJANZ may not be right for you Before taking XELJANZ tell your healthcare provider if you have an infection See ldquoWhat is the most important information I should know

about XELJANZrdquo have liver problems have kidney problems have any stomach area (abdominal) pain or been diagnosed with diverticulitis or

ulcers in your stomach or intestines have had a reaction to tofacitinib or any of the ingredients in XELJANZ have recently received or are scheduled to receive a vaccine People who take

XELJANZ should not receive live vaccines People taking XELJANZ can receive non-live vaccines

have any other medical conditions plan to become pregnant or are pregnant It is not known if XELJANZ will harm

an unborn baby

Pregnancy Registry Pfizer has a registry for pregnant women who take XELJANZ The purpose of this registry is to check the health of the pregnant mother and her baby If you are pregnant or become pregnant while taking XELJANZ talk to your healthcare provider about how you can join this pregnancy registry or you may contact the registry at 1-877-311-8972 to enroll

plan to breastfeed or are breastfeeding You and your healthcare provider should decide if you will take XELJANZ or breastfeed You should not do both

30

Reference ID 3213422

Tell your healthcare provider about all the medicines you take including prescription and non-prescription medicines vitamins and herbal supplements XELJANZ and other medicines may affect each other causing side effects

Especially tell your healthcare provider if you take any other medicines to treat your rheumatoid arthritis You should not take

tocilizumab (Actemrareg) etanercept (Enbrelreg) adalimumab (Humirareg) infliximab (Remicadereg) rituximab (Rituxanreg) abatacept (Orenciareg) anakinra (Kineretreg) certolizumab (Cimziareg) golimumab (Simponireg) azathioprine cyclosporine or other immunosuppressive drugs while you are taking XELJANZ Taking XELJANZ with these medicines may increase your risk of infection

medicines that affect the way certain liver enzymes work Ask your healthcare provider if you are not sure if your medicine is one of these

Know the medicines you take Keep a list of them to show your healthcare provider and pharmacist when you get a new medicine

How should I take XELJANZ

Take XELJANZ as your healthcare provider tells you to take it

Take XELJANZ 2 times a day with or without food

If you take too much XELJANZ call your healthcare provider or go the nearest hospital emergency room right away

What are possible side effects of XELJANZ

XELJANZ may cause serious side effects including

See ldquoWhat is the most important information I should know about XELJANZrdquo

Hepatitis B or C activation infection in people who carry the virus in their blood If you are a carrier of the hepatitis B or C virus (viruses that affect the liver) the virus may become active while you use XELJANZ Your healthcare provider may do blood tests before you start treatment with XELJANZ and while you are using XELJANZ Tell your healthcare provider if you have any of the following symptoms of a possible hepatitis B or C infection

o feel very tired o fevers o skin or eyes look yellow o chills o little or no appetite o stomach discomfort o vomiting o muscle aches o clay-colored bowel o dark urine

movements o skin rash

31

Reference ID 3213422

Common side effects of XELJANZ include upper respiratory tract infections (common cold sinus infections) headache diarrhea nasal congestion sore throat and runny nose (nasopharyngitis)

Tell your healthcare provider if you have any side effect that bothers you or that does not go away

These are not all the possible side effects of XELJANZ For more information ask your healthcare provider or pharmacist

Call your doctor for medical advice about side effects You may report side effects to FDA at 1-800-FDA-1088

You may also report side effects to Pfizer at 1-800-438-1985

How should I store XELJANZ

Store XELJANZ at 68degF to 77degF (room temperature)

Safely throw away medicine that is out of date or no longer needed

Keep XELJANZ and all medicines out of the reach of children

General information about the safe and effective use of XELJANZ

Medicines are sometimes prescribed for purposes other than those listed in a Medication Guide Do not use XELJANZ for a condition for which it was not prescribed Do not give XELJANZ to other people even if they have the same symptoms you have It may harm them

This Medication Guide summarizes the most important information about XELJANZ If you would like more information talk to your healthcare provider You can ask your pharmacist or healthcare provider for information about XELJANZ that is written for health professionals

What are the ingredients in XELJANZ

Active ingredient tofacitinib citrate

Inactive ingredients microcrystalline cellulose lactose monohydrate croscarmellose sodium magnesium stearate HPMC 2910Hypromellose 6cP titanium dioxide macrogolPEG3350 and triacetin

32

Reference ID 3213422

This Medication Guide has been approved by the US Food and Drug Administration

LAB-0535-10 Issued November 2012

33

Reference ID 3213422

7 DRUG INTERACTIONS

71 Potent CYP3A4 Inhibitors Tofacitinib exposure is increased when XELJANZ is coadministered with potent inhibitors of cytochrome P450 (CYP) 3A4 (eg ketoconazole) [see Dosage and Administration (21) and Figure 3]

72 Moderate CYP3A4 and Potent CYP2C19 Inhibitors Tofacitinib exposure is increased when XELJANZ is coadministered with medications that result in both moderate inhibition of CYP3A4 and potent inhibition of CYP2C19 (eg fluconazole) [see Dosage and Administration (21) and Figure 3]

73 Potent CYP3A4 Inducers Tofacitinib exposure is decreased when XELJANZ is coadministered with potent CYP3A4 inducers (eg rifampin) [see Dosage and Administration (21) and Figure 3]

74 Immunosuppressive Drugs There is a risk of added immunosuppression when XELJANZ is coadministered with potent immunosuppressive drugs (eg azathioprine tacrolimus cyclosporine) Combined use of multiple-dose XELJANZ with potent immunosuppressives has not been studied in rheumatoid arthritis

8 USE IN SPECIFIC POPULATIONS

81 Pregnancy Teratogenic effects Pregnancy Category C There are no adequate and well-controlled studies in pregnant women XELJANZ should be used during pregnancy only if the potential benefit justifies the potential risk to the fetus Tofacitinib has been shown to be fetocidal and teratogenic in rats and rabbits when given at exposures 146 times and 13 times respectively the maximum recommended human dose (MRHD)

In a rat embryofetal developmental study tofacitinib was teratogenic at exposure levels approximately 146 times the MRHD (on an AUC basis at oral doses of 100 mgkgday) Teratogenic effects consisted of external and soft tissue malformations of anasarca and membranous ventricular septal defects respectively and skeletal malformations or variations (absent cervical arch bent femur fibula humerus radius scapula tibia and ulna sternoschisis absent rib misshapen femur branched rib fused rib fused sternebra and hemicentric thoracic centrum) In addition there was an increase in post-implantation loss consisting of early and late resorptions resulting in a reduced number of viable fetuses Mean fetal body weight was reduced No developmental toxicity was observed in rats at exposure levels approximately 58 times the MRHD (on an AUC basis at oral doses of 30 mgkgday) In the rabbit embryofetal developmental study tofacitinib was teratogenic at exposure levels approximately 13 times the MRHD (on an AUC basis at oral doses of 30 mgkgday) in the absence of signs of maternal toxicity Teratogenic effects included thoracogastroschisis omphalocele membranous ventricular septal defects and cranialskeletal malformations (microstomia microphthalmia)

13

Reference ID 3213422

mid-line and tail defects In addition there was an increase in post-implantation loss associated with late resorptions No developmental toxicity was observed in rabbits at exposure levels approximately 3 times the MRHD (on an AUC basis at oral doses of 10 mgkgday)

Nonteratogenic effects In a peri- and postnatal rat study there were reductions in live litter size postnatal survival and pup body weights at exposure levels approximately 73 times the MRHD (on an AUC basis at oral doses of 50 mgkgday) There was no effect on behavioral and learning assessments sexual maturation or the ability of the F1 generation rats to mate and produce viable F2 generation fetuses in rats at exposure levels approximately 17 times the MRHD (on an AUC basis at oral doses of 10 mgkgday)

Pregnancy Registry To monitor the outcomes of pregnant women exposed to XELJANZ a pregnancy registry has been established Physicians are encouraged to register patients and pregnant women are encouraged to register themselves by calling 1-877-311-8972

83 Nursing Mothers Tofacitinib was secreted in milk of lactating rats It is not known whether tofacitinib is excreted in human milk Because many drugs are excreted in human milk and because of the potential for serious adverse reactions in nursing infants from tofacitinib a decision should be made whether to discontinue nursing or to discontinue the drug taking into account the importance of the drug for the mother

84 Pediatric Use The safety and effectiveness of XELJANZ in pediatric patients have not been established

85 Geriatric Use Of the 3315 patients who enrolled in Studies I to V a total of 505 rheumatoid arthritis patients were 65 years of age and older including 71 patients 75 years and older The frequency of serious infection among XELJANZ-treated subjects 65 years of age and older was higher than among those under the age of 65 As there is a higher incidence of infections in the elderly population in general caution should be used when treating the elderly

86 Hepatic Impairment No dose adjustment is required in patients with mild hepatic impairment XELJANZ dose should be reduced to 5 mg once daily in patients with moderate hepatic impairment The safety and efficacy of XELJANZ have not been studied in patients with severe hepatic impairment or in patients with positive hepatitis B virus or hepatitis C virus serology [see Dosage and Administration (21) and Warnings and Precautions (56)]

87 Renal Impairment No dose adjustment is required in patients with mild renal impairment XELJANZ dose should be reduced to 5 mg once daily in patients with moderate and severe renal impairment [see Dosage and Administration (21)] In clinical trials XELJANZ was not evaluated in rheumatoid arthritis patients with baseline creatinine clearance values (estimated by the Cockroft-Gault equation) less than 40 mLmin

14

Reference ID 3213422

10 OVERDOSAGE Signs Symptoms and Laboratory Findings of Acute Overdosage in Humans There is no experience with overdose of XELJANZ

Treatment or Management of Overdose Pharmacokinetic data up to and including a single dose of 100 mg in healthy volunteers indicate that more than 95 of the administered dose is expected to be eliminated within 24 hours

There is no specific antidote for overdose with XELJANZ In case of an overdose it is recommended that the patient be monitored for signs and symptoms of adverse reactions Patients who develop adverse reactions should receive appropriate treatment

11 DESCRIPTION XELJANZ is the citrate salt of tofacitinib a JAK inhibitor

Tofacitinib citrate is a white to off-white powder with the following chemical name (3R4R)-4shymethyl-3-(methyl-7H-pyrrolo [23-d]pyrimidin-4-ylamino)-szlig-oxo-1-piperidinepropanenitrile 2shyhydroxy-123-propanetricarboxylate (11) It is freely soluble in water

Tofacitinib citrate has a molecular weight of 5045 Daltons (or 3124 Daltons as the tofacitinib free base) and a molecular formula of C16H20N6ObullC6H8O7 The chemical structure of tofacitinib citrate is

NN

Me

Me

N

N N H

O N

HO2C CO2H

HO2C

OH bull

XELJANZ is supplied for oral administration as 5 mg tofacitinib (equivalent to 8 mg tofacitinib citrate) white round immediate-release film-coated tablet Each tablet of XELJANZ contains the appropriate amount of XELJANZ as a citrate salt and the following inactive ingredients microcrystalline cellulose lactose monohydrate croscarmellose sodium magnesium stearate HPMC 2910Hypromellose 6cP titanium dioxide macrogolPEG3350 and triacetin

12 CLINICAL PHARMACOLOGY

121 Mechanism of Action Tofacitinib is a Janus kinase (JAK) inhibitor JAKs are intracellular enzymes which transmit signals arising from cytokine or growth factor-receptor interactions on the cellular membrane to influence cellular processes of hematopoiesis and immune cell function Within the signaling pathway JAKs phosphorylate and activate Signal Transducers and Activators of Transcription (STATs) which modulate intracellular activity including gene expression Tofacitinib modulates

15

Reference ID 3213422

the signaling pathway at the point of JAKs preventing the phosphorylation and activation of STATs JAK enzymes transmit cytokine signaling through pairing of JAKs (eg JAK1JAK3 JAK1JAK2 JAK1TyK2 JAK2JAK2) Tofacitinib inhibited the in vitro activities of JAK1JAK2 JAK1JAK3 and JAK2JAK2 combinations with IC50 of 406 56 and 1377 nM respectively However the relevance of specific JAK combinations to therapeutic effectiveness is not known

122 Pharmacodynamics Treatment with XELJANZ was associated with dose-dependent reductions of circulating CD1656+ natural killer cells with estimated maximum reductions occurring at approximately 8shy10 weeks after initiation of therapy These changes generally resolved within 2-6 weeks after discontinuation of treatment Treatment with XELJANZ was associated with dose-dependent increases in B cell counts Changes in circulating T-lymphocyte counts and T-lymphocyte subsets (CD3+ CD4+ and CD8+) were small and inconsistent The clinical significance of these changes is unknown

Total serum IgG IgM and IgA levels after 6-month dosing in patients with rheumatoid arthritis were lower than placebo however changes were small and not dose-dependent

After treatment with XELJANZ in patients with rheumatoid arthritis rapid decreases in serum C-reactive protein (CRP) were observed and maintained throughout dosing Changes in CRP observed with XELJANZ treatment do not reverse fully within 2 weeks after discontinuation indicating a longer duration of pharmacodynamic activity compared to the pharmacokinetic half-life

123 Pharmacokinetics Following oral administration of XELJANZ peak plasma concentrations are reached within 05shy1 hour elimination half-life is ~3 hours and a dose-proportional increase in systemic exposure was observed in the therapeutic dose range Steady state concentrations are achieved in 24-48 hours with negligible accumulation after twice daily administration

Absorption The absolute oral bioavailability of tofacitinib is 74 Coadministration of XELJANZ with a high-fat meal resulted in no changes in AUC while Cmax was reduced by 32 In clinical trials XELJANZ was administered without regard to meals

Distribution After intravenous administration the volume of distribution is 87 L The protein binding of tofacitinib is ~40 Tofacitinib binds predominantly to albumin and does not appear to bind to 1-acid glycoprotein Tofacitinib distributes equally between red blood cells and plasma

Metabolism and Elimination Clearance mechanisms for tofacitinib are approximately 70 hepatic metabolism and 30 renal excretion of the parent drug The metabolism of tofacitinib is primarily mediated by CYP3A4 with minor contribution from CYP2C19 In a human radiolabeled study more than 65 of the total circulating radioactivity was accounted for by unchanged tofacitinib with the remaining

16

Reference ID 3213422

35 attributed to 8 metabolites each accounting for less than 8 of total radioactivity The pharmacologic activity of tofacitinib is attributed to the parent molecule

Pharmacokinetics in Rheumatoid Arthritis Patients Population PK analysis in rheumatoid arthritis patients indicated no clinically relevant change in tofacitinib exposure after accounting for differences in renal function (ie creatinine clearance) between patients based on age weight gender and race (Figure 1) An approximately linear relationship between body weight and volume of distribution was observed resulting in higher peak (Cmax) and lower trough (Cmin) concentrations in lighter patients However this difference is not considered to be clinically relevant The between-subject variability ( coefficient of variation) in AUC of tofacitinib is estimated to be approximately 27

Specific Populations The effect of renal and hepatic impairment and other intrinsic factors on the pharmacokinetics of tofacitinib is shown in Figure 1

17

Reference ID 3213422

Figure 1 Impact of Intrinsic Factors on Tofacitinib Pharmacokinetics

Intrinsic Factor

Weight = 40 kg

Weight = 140 kg

Age = 80 years

Female

Asian

Black

Hispanic

Renal Impairment (Mild)

Renal Impairment (Moderate)

Renal Impairment (Severe)

Hepatic Impairment (Mild)

Hepatic Impairment (Moderate)

PK

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

0

Ratio and 90 CI Recommendation

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

Reduce Dose to 5 mg Once Daily

Reduce Dose to 5 mg Once Daily

No Dose Adjustment

Reduce Dose to 5 mg Once Daily

05 1 15 2 25 3 35 4

Ratio relative to reference

Supplemental doses are not necessary in patients after dialysis

Reference values for weight age gender and race comparisons are 70 kg 55 years male and White respectively Reference groups for renal and hepatic impairment data are subjects with normal renal and hepatic function

Drug Interactions

Potential for XELJANZ to Influence the PK of Other Drugs In vitro studies indicate that tofacitinib does not significantly inhibit or induce the activity of the

18

Reference ID 3213422

major human drug-metabolizing CYPs (CYP1A2 CYP2B6 CYP2C8 CYP2C9 CYP2C19 CYP2D6 and CYP3A4) at concentrations exceeding 185 times the steady state Cmax of a 5 mg twice daily dose These in vitro results were confirmed by a human drug interaction study showing no changes in the PK of midazolam a highly sensitive CYP3A4 substrate when coadministered with XELJANZ

In rheumatoid arthritis patients the oral clearance of tofacitinib does not vary with time indicating that tofacitinib does not normalize CYP enzyme activity in rheumatoid arthritis patients Therefore coadministration with XELJANZ is not expected to result in clinically relevant increases in the metabolism of CYP substrates in rheumatoid arthritis patients

In vitro data indicate that the potential for tofacitinib to inhibit transporters such as Pshyglycoprotein organic anionic or cationic transporters at therapeutic concentrations is low

Dosing recommendations for coadministered drugs following administration with XELJANZ are shown in Figure 2

Figure 2 Impact of XELJANZ on PK of Other Drugs

Coadministered PK Drug

Methotrexate AUC

Cmax

CYP3A Substrate AUC Midazolam

Cmax

Oral ContraceptivesLevonorgestrel

AUC

Cmax

Ethinyl Estradiol AUC

Cmax

OCT amp MATE Substrate AUC Metformin

Cmax

Ratio and 90 CI Recommendation

No Dose Adjustment

No dose adjustment for CYP3A substrates such as midazolam

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

0 025 05 075 1 125 15 175 2

Ratio relative to reference

Note Reference group is administration of concomitant medication alone OCT = Organic Cationic Transporter MATE = Multidrug and Toxic Compound Extrusion

Potential for Other Drugs to Influence the PK of Tofacitinib Since tofacitinib is metabolized by CYP3A4 interaction with drugs that inhibit or induce CYP3A4 is likely Inhibitors of CYP2C19 alone or P-glycoprotein are unlikely to substantially alter the PK of tofacitinib Dosing recommendations for XELJANZ for administration with CYP inhibitors or inducers are shown in Figure 3

19

Reference ID 3213422

Figure 3 Impact of Other Drugs on PK of XELJANZ

Coadministered PK Drug

CYP3A Inhib itor AUC Ketoconazole

Cmax

CYP3A amp CYP2C19 Inhib itor AUC

Cmax Fluconazole

CYP Inducer Rifampin AUC

Cmax

Methotrexate AUC

Cmax

Tacrolimus AUC Cmax

Cyclosporine AUC

Cmax

Ratio and 90 CI Recommendation

Reduce XELJANZ Dose to 5 mg Once Daily

Reduce XELJANZ Dose to 5 mg Once Daily

May Decrease Efficacy

No Dose Adjustment

There is a risk of added immunosuppressionif XELJANZ is taken with Tacrolimus

There is a risk of added immunosuppressionif XELJANZ is taken with Cyclosporine

0 05 1 15 2 25

Ratio relative to reference

Note Reference group is administration of tofacitinib alone

13 NONCLINICAL TOXICOLOGY

131 Carcinogenesis Mutagenesis Impairment of Fertility In a 39-week toxicology study in monkeys tofacitinib at exposure levels approximately 6 times the MRHD (on an AUC basis at oral doses of 5 mgkg twice daily) produced lymphomas No lymphomas were observed in this study at exposure levels 1 times the MRHD (on an AUC basis at oral doses of 1 mgkg twice daily)

The carcinogenic potential of tofacitinib was assessed in 6-month rasH2 transgenic mouse carcinogenicity and 2-year rat carcinogenicity studies Tofacitinib at exposure levels approximately 34 times the MRHD (on an AUC basis at oral doses of 200 mgkgday) was not carcinogenic in mice

In the 24-month oral carcinogenicity study in Sprague-Dawley rats tofacitinib caused benign Leydig cell tumors hibernomas (malignancy of brown adipose tissue) and benign thymomas at doses greater than or equal to 30 mgkgday (approximately 42 times the exposure levels at the MRHD on an AUC basis) The relevance of benign Leydig cell tumors to human risk is not known

20

Reference ID 3213422

Tofacitinib was not mutagenic in the bacterial reverse mutation assay It was positive for clastogenicity in the in vitro chromosome aberration assay with human lymphocytes in the presence of metabolic enzymes but negative in the absence of metabolic enzymes Tofacitinib was negative in the in vivo rat micronucleus assay and in the in vitro CHO-HGPRT assay and the in vivo rat hepatocyte unscheduled DNA synthesis assay

In rats tofacitinib at exposure levels approximately 17 times the MRHD (on an AUC basis at oral doses of 10 mgkgday) reduced female fertility due to increased post-implantation loss There was no impairment of female rat fertility at exposure levels of tofacitinib equal to the MRHD (on an AUC basis at oral doses of 1 mgkgday) Tofacitinib exposure levels at approximately 133 times the MRHD (on an AUC basis at oral doses of 100 mgkgday) had no effect on male fertility sperm motility or sperm concentration

14 CLINICAL STUDIES The XELJANZ clinical development program included two dose-ranging trials and five confirmatory trials

DOSE-RANGING TRIALS Dose selection for XELJANZ was based on two pivotal dose-ranging trials

Dose-Ranging Study 1 was a 6-month monotherapy trial in 384 patients with active rheumatoid arthritis who had an inadequate response to a DMARD Patients who previously received adalimumab therapy were excluded Patients were randomized to 1 of 7 monotherapy treatments XELJANZ 1 3 5 10 or 15 mg twice daily adalimumab 40 mg subcutaneously every other week for 10 weeks followed by XELJANZ 5 mg twice daily for 3 months or placebo

Dose-Ranging Study 2 was a 6-month trial in which 507 patients with active rheumatoid arthritis who had an inadequate response to MTX alone received one of 6 dose regimens of XELJANZ (20 mg once daily 1 3 5 10 or 15 mg twice daily) or placebo added to background MTX

The results of XELJANZ-treated patients achieving ACR20 responses in Studies 1 and 2 are shown in Figure 4 Although a dose-response relationship was observed in Study 1 the proportion of patients with an ACR20 response did not clearly differ between the 10 mg and 15 mg doses Furthermore there was a smaller proportion of patients who responded to adalimumab monotherapy compared to those treated with XELJANZ doses 3 mg twice daily and greater In Study 2 a smaller proportion of patients achieved an ACR20 response in the placebo and XELJANZ 1 mg groups compared to patients treated with the other XELJANZ doses However there was no difference in the proportion of responders among patients treated with XELJANZ 3 5 10 15 mg twice daily or 20 mg once daily doses

21

Reference ID 3213422

Figure 4 Proportion of Patients with ACR20 Response at Month 3 in Dose-Ranging Studies 1 and 2

CONFIRMATORY TRIALS Study I was a 6-month monotherapy trial in which 610 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to a DMARD (nonbiologic or biologic) received XELJANZ 5 or 10 mg twice daily or placebo At the Month 3 visit all patients randomized to placebo treatment were advanced in a blinded fashion to a second predetermined treatment of XELJANZ 5 or 10 mg twice daily The primary endpoints at Month 3 were the proportion of patients who achieved an ACR20 response changes in Health Assessment Questionnaire ndash Disability Index (HAQ-DI) and rates of Disease Activity Score DAS28-4(ESR) less than 26

Study II was a 12-month trial in which 792 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to a nonbiologic DMARD received XELJANZ 5 or 10 mg twice daily or placebo added to background DMARD treatment (excluding potent immunosuppressive treatments such as azathioprine or cyclosporine) At the Month 3 visit nonresponding patients were advanced in a blinded fashion to a second predetermined treatment of XELJANZ 5 or 10 mg twice daily At the end of Month 6 all placebo patients were advanced to their second predetermined treatment in a blinded fashion The primary endpoints were the proportion of patients who achieved an ACR20 response at Month 6 changes in HAQ-DI at Month 3 and rates of DAS28-4(ESR) less than 26 at Month 6

Study III was a 12-month trial in 717 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to MTX Patients received XELJANZ 5 or 10 mg twice daily adalimumab 40 mg subcutaneously every other week or placebo added to background MTX

22

Reference ID 3213422

Placebo patients were advanced as in Study II The primary endpoints were the proportion of patients who achieved an ACR20 response at Month 6 HAQ-DI at Month 3 and DAS28-4(ESR) less than 26 at Month 6

Study IV is an ongoing 2-year trial with a planned analysis at 1 year in which 797 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to MTX received XELJANZ 5 or 10 mg twice daily or placebo added to background MTX Placebo patients were advanced as in Study II The primary endpoints were the proportion of patients who achieved an ACR20 response at Month 6 mean change from baseline in van der Heijde-modified total Sharp Score (mTSS) at Month 6 HAQ-DI at Month 3 and DAS28-4(ESR) less than 26 at Month 6

Study V was a 6-month trial in which 399 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to at least one approved TNF-inhibiting biologic agent received XELJANZ 5 or 10 mg twice daily or placebo added to background MTX At the Month 3 visit all patients randomized to placebo treatment were advanced in a blinded fashion to a second predetermined treatment of XELJANZ 5 or 10 mg twice daily The primary endpoints at Month 3 were the proportion of patients who achieved an ACR20 response HAQ-DI and DAS28-4(ESR) less than 26

Clinical Response The percentages of XELJANZ-treated patients achieving ACR20 ACR50 and ACR70 responses in Studies I IV and V are shown in Table 5 Similar results were observed with Studies II and III In all trials patients treated with either 5 or 10 mg twice daily XELJANZ had higher ACR20 ACR50 and ACR70 response rates versus placebo with or without background DMARD treatment at Month 3 and Month 6 Higher ACR20 response rates were observed within 2 weeks compared to placebo In the 12-month trials ACR response rates in XELJANZ-treated patients were consistent at 6 and 12 months

23

Reference ID 3213422

Table 5 Proportion of Patients with an ACR Response Percent of Patients

Monotherapy in Nonbiologic or Biologic DMARD Inadequate

Respondersc

MTX Inadequate Respondersd TNF Inhibitor Inadequate Responderse

Study I Study IV Study V

Na PBO

122

XELJANZ 5 mg Twice

Daily

243

XELJANZ 10 mg Twice Daily

245

PBO + MTX

160

XELJANZ 5 mg Twice

Daily + MTX

321

XELJANZ 10 mg Twice

Daily + MTX

316

PBO +

MTX

132

XELJANZ 5 mg Twice

Daily + MTX

133

XELJANZ 10 mg Twice

Daily + MTX

134 ACR20 Month 3 Month 6

26 NAb

59 69

65 70

27 25

55 50

67 62

24 NA

41 51

48 54

ACR50 Month 3 Month 6

12 NA

31 42

36 46

8 9

29 32

37 44

8 NA

26 37

28 30

ACR70 Month 3 Month 6

6 NA

15 22

20 29

3 1

11 14

17 23

2 NA

14 16

10 16

a N is number of randomized and treated patients b NA Not applicable as data for placebo treatment is not available beyond 3 months in Studies I and V due to placebo advancement c Inadequate response to at least one DMARD (biologic or nonbiologic) due to lack of efficacy or toxicity d Inadequate response to MTX defined as the presence of sufficient residual disease activity to meet the entry criteria e Inadequate response to a least one TNF inhibitor due to lack of efficacy andor intolerance

In Study IV a greater proportion of patients treated with XELJANZ 5 mg or 10 mg twice daily plus MTX achieved a low level of disease activity as measured by a DAS28-4(ESR) less than 26 at 6 months compared to those treated with MTX alone (Table 6)

24

Reference ID 3213422

Table 6 Proportion of Patients with DAS28-4(ESR) Less Than 26 with Number of Residual Active Joints Study IV DAS28-4(ESR) Less Than 26 Placebo + MTX

160

XELJANZ 5 mg Twice Daily + MTX

321

XELJANZ 10 mg Twice Daily + MTX

316 Proportion of responders at Month 6 (n) 1 (2) 6 (19) 13 (42)

Of responders proportion with 0 active joints (n)

50 (1) 42 (8) 36 (15)

Of responders proportion with 1 active joint (n) 0 5 (1) 17 (7) Of responders proportion with 2 active joints (n)

0 32 (6) 7 (3)

Of responders proportion with 3 or more active joints (n)

50 (1) 21 (4) 40 (17)

The results of the components of the ACR response criteria for Study IV are shown in Table 7 Similar results were observed in Studies I II III and V

Table 7 Components of ACR Response at 3 Months Study IV

XELJANZ

5 mg

Twice Daily + MTX

N=321

XELJANZ

10 mg

Twice Daily + MTX

N=316

Placebo + MTX

N=160

Component (mean) a Baseline Month 3a Baseline Month 3a Baseline Month 3a

Number of tender

joints 24 13 23 10 23 18

(0-68) (14) (14) (15) (12) (13) (14)

Number of swollen

joints 14 6 14 6 14 10

(0-66) (8) (8) (8) (7) (9) (9)

Painb 58

(23)

34

(23)

58

(24)

29

(22)

55

(24)

47

(24)

Patient global

assessmentb

58

(24)

35

(23)

57

(23)

29

(20)

54

(23)

47

(24)

Disability index

(HAQ-DI)c 141 099 140 084 132 119

(068) (065) (066) (064) (067) (068)

25

Reference ID 3213422

Physician global

assessmentb 59 30 58 24 56 43

(16) (19) (17) (17) (18) (22)

CRP (mgL) 153 71 171 44 137 146

(190) (191) (269) (86) (149) (187) aData shown is mean (Standard Deviation) at Month 3bVisual analog scale 0 = best 100 = worst cHealth Assessment Questionnaire Disability Index 0 = best 3 = worst 20 questions categories dressing and grooming arising eating walking hygiene reach grip and activities

The percent of ACR20 responders by visit for Study IV is shown in Figure 5 Similar responses were observed in Studies I II III and V

Figure 5 Percentage of ACR20 Responders by Visit for Study IV

Physical Function Response Improvement in physical functioning was measured by the HAQ-DI Patients receiving XELJANZ 5 and 10 mg twice daily demonstrated greater improvement from baseline in physical functioning compared to placebo at Month 3

The mean (95 CI) difference from placebo in HAQ-DI improvement from baseline at Month 3 in Study III was -022 (-035 -010) in patients receiving 5 mg XELJANZ twice daily and -032 (-044 -019) in patients receiving 10 mg XELJANZ twice daily Similar results were obtained in

26

Reference ID 3213422

Studies I II IV and V In the 12-month trials HAQ-DI results in XELJANZ-treated patients were consistent at 6 and 12 months

16 HOW SUPPLIEDSTORAGE AND HANDLING XELJANZ is provided as 5 mg tofacitinib (equivalent to 8 mg tofacitinib citrate) tablets White round immediate-release film-coated tablets debossed with ldquoPfizerrdquo on one side and ldquoJKI 5rdquo on the other side and available in

Bottles of 60 NDC 0069-1001-01 Bottles of 180 NDC 0069-1001-02

Storage and Handling Store at 20degC to 25degC (68degF to 77degF) [See USP Controlled Room Temperature]

Do not repackage

17 PATIENT COUNSELING INFORMATION See FDA-approved patient labeling (Medication Guide)

Inform patients of the availability of a Medication Guide and instruct them to read the Medication Guide prior to taking XELJANZ Instruct patients to take XELJANZ only as prescribed

This productrsquos label may have been updated For current full prescribing information please visit wwwpfizercom

LAB-0445-10

27

Reference ID 3213422

MEDICATION GUIDE

XELJANZ (ZELrsquo JANSrsquo) (tofacitinib)

Read this Medication Guide before you start taking XELJANZ and each time you get a refill There may be new information This Medication Guide does not take the place of talking to your healthcare provider about your medical condition or treatment

What is the most important information I should know about XELJANZ XELJANZ may cause serious side effects including

1 Serious infections

XELJANZ is a medicine that affects your immune system XELJANZ can lower the ability of your immune system to fight infections Some people have serious infections while taking XELJANZ including tuberculosis (TB) and infections caused by bacteria fungi or viruses that can spread throughout the body Some people have died from these infections Your healthcare provider should test you for TB before starting XELJANZ Your healthcare provider should monitor you closely for signs and symptoms of

TB infection during treatment with XELJANZ

You should not start taking XELJANZ if you have any kind of infection unless your healthcare provider tells you it is okay

Before starting XELJANZ tell your healthcare provider if you think you have an infection or have symptoms of an infection such as

o fever sweating or chills o warm red or painful skin o muscle aches or sores on your body o cough o diarrhea or stomach pain o shortness of breath o burning when you urinate o blood in phlegm or urinating more often o weight loss than normal

o feeling very tired are being treated for an infection get a lot of infections or have infections that keep coming back have diabetes HIV or a weak immune system People with these conditions

have a higher chance for infections have TB or have been in close contact with someone with TB live or have lived or have traveled to certain parts of the country (such as the

Ohio and Mississippi River valleys and the Southwest) where there is an increased chance for getting certain kinds of fungal infections (histoplasmosis coccidioidomycosis or blastomycosis) These infections may happen or become more severe if you use XELJANZ Ask your healthcare provider if you do not know if you have lived in an area where these infections are common

have or have had hepatitis B or C

28

Reference ID 3213422

After starting XELJANZ call your healthcare provider right away if you have any symptoms of an infection XELJANZ can make you more likely to get infections or make worse any infection that you have

2 Cancer and immune system problems

XELJANZ may increase your risk of certain cancers by changing the way your immune system works

Lymphoma and other cancers can happen in patients taking XELJANZ Tell your healthcare provider if you have ever had any type of cancer

Some people who have taken XELJANZ with certain other medicines to prevent kidney transplant rejection have had a problem with certain white blood cells growing out of control (Epstein Barr Virus-associated post transplant lymphoproliferative disorder)

3 Tears (perforation) in the stomach or intestines

Tell your healthcare provider if you have had diverticulitis (inflammation in parts of the large intestine) or ulcers in your stomach or intestines Some people taking XELJANZ get tears in their stomach or intestine This happens most often in people who also take nonsteroidal anti-inflammatory drugs (NSAIDs) corticosteroids or methotrexate

Tell your healthcare provider right away if you have fever and stomach-area pain that does not go away and a change in your bowel habits

4 Changes in certain laboratory test results Your healthcare provider should do blood tests before you start receiving XELJANZ and while you take XELJANZ to check for the following side effects

changes in lymphocyte counts Lymphocytes are white blood cells that help the body fight off infections

low neutrophil counts Neutrophils are white blood cells that help the body fight off infections

low red blood cell count This may mean that you have anemia which may make you feel weak and tired

Your healthcare provider should routinely check certain liver tests

You should not receive XELJANZ if your lymphocyte count neutrophil count or red blood cell count is too low or your liver tests are too high

Your healthcare provider may stop your XELJANZ treatment for a period of time if needed because of changes in these blood test results

29

Reference ID 3213422

You may also have changes in other laboratory tests such as your blood cholesterol levels Your healthcare provider should do blood tests to check your cholesterol levels 4 to 8 weeks after you start receiving XELJANZ and as needed after that Normal cholesterol levels are important to good heart health

See ldquoWhat are the possible side effects of XELJANZrdquo for more information about side effects

What is XELJANZ

XELJANZ is a prescription medicine called a Janus kinase (JAK) inhibitor XELJANZ is used to treat adults with moderately to severely active rheumatoid arthritis in which methotrexate did not work well

It is not known if XELJANZ is safe and effective in people with Hepatitis B or C

XELJANZ is not for people with severe liver problems

It is not known if XELJANZ is safe and effective in children

What should I tell my healthcare provider before taking XELJANZ

XELJANZ may not be right for you Before taking XELJANZ tell your healthcare provider if you have an infection See ldquoWhat is the most important information I should know

about XELJANZrdquo have liver problems have kidney problems have any stomach area (abdominal) pain or been diagnosed with diverticulitis or

ulcers in your stomach or intestines have had a reaction to tofacitinib or any of the ingredients in XELJANZ have recently received or are scheduled to receive a vaccine People who take

XELJANZ should not receive live vaccines People taking XELJANZ can receive non-live vaccines

have any other medical conditions plan to become pregnant or are pregnant It is not known if XELJANZ will harm

an unborn baby

Pregnancy Registry Pfizer has a registry for pregnant women who take XELJANZ The purpose of this registry is to check the health of the pregnant mother and her baby If you are pregnant or become pregnant while taking XELJANZ talk to your healthcare provider about how you can join this pregnancy registry or you may contact the registry at 1-877-311-8972 to enroll

plan to breastfeed or are breastfeeding You and your healthcare provider should decide if you will take XELJANZ or breastfeed You should not do both

30

Reference ID 3213422

Tell your healthcare provider about all the medicines you take including prescription and non-prescription medicines vitamins and herbal supplements XELJANZ and other medicines may affect each other causing side effects

Especially tell your healthcare provider if you take any other medicines to treat your rheumatoid arthritis You should not take

tocilizumab (Actemrareg) etanercept (Enbrelreg) adalimumab (Humirareg) infliximab (Remicadereg) rituximab (Rituxanreg) abatacept (Orenciareg) anakinra (Kineretreg) certolizumab (Cimziareg) golimumab (Simponireg) azathioprine cyclosporine or other immunosuppressive drugs while you are taking XELJANZ Taking XELJANZ with these medicines may increase your risk of infection

medicines that affect the way certain liver enzymes work Ask your healthcare provider if you are not sure if your medicine is one of these

Know the medicines you take Keep a list of them to show your healthcare provider and pharmacist when you get a new medicine

How should I take XELJANZ

Take XELJANZ as your healthcare provider tells you to take it

Take XELJANZ 2 times a day with or without food

If you take too much XELJANZ call your healthcare provider or go the nearest hospital emergency room right away

What are possible side effects of XELJANZ

XELJANZ may cause serious side effects including

See ldquoWhat is the most important information I should know about XELJANZrdquo

Hepatitis B or C activation infection in people who carry the virus in their blood If you are a carrier of the hepatitis B or C virus (viruses that affect the liver) the virus may become active while you use XELJANZ Your healthcare provider may do blood tests before you start treatment with XELJANZ and while you are using XELJANZ Tell your healthcare provider if you have any of the following symptoms of a possible hepatitis B or C infection

o feel very tired o fevers o skin or eyes look yellow o chills o little or no appetite o stomach discomfort o vomiting o muscle aches o clay-colored bowel o dark urine

movements o skin rash

31

Reference ID 3213422

Common side effects of XELJANZ include upper respiratory tract infections (common cold sinus infections) headache diarrhea nasal congestion sore throat and runny nose (nasopharyngitis)

Tell your healthcare provider if you have any side effect that bothers you or that does not go away

These are not all the possible side effects of XELJANZ For more information ask your healthcare provider or pharmacist

Call your doctor for medical advice about side effects You may report side effects to FDA at 1-800-FDA-1088

You may also report side effects to Pfizer at 1-800-438-1985

How should I store XELJANZ

Store XELJANZ at 68degF to 77degF (room temperature)

Safely throw away medicine that is out of date or no longer needed

Keep XELJANZ and all medicines out of the reach of children

General information about the safe and effective use of XELJANZ

Medicines are sometimes prescribed for purposes other than those listed in a Medication Guide Do not use XELJANZ for a condition for which it was not prescribed Do not give XELJANZ to other people even if they have the same symptoms you have It may harm them

This Medication Guide summarizes the most important information about XELJANZ If you would like more information talk to your healthcare provider You can ask your pharmacist or healthcare provider for information about XELJANZ that is written for health professionals

What are the ingredients in XELJANZ

Active ingredient tofacitinib citrate

Inactive ingredients microcrystalline cellulose lactose monohydrate croscarmellose sodium magnesium stearate HPMC 2910Hypromellose 6cP titanium dioxide macrogolPEG3350 and triacetin

32

Reference ID 3213422

This Medication Guide has been approved by the US Food and Drug Administration

LAB-0535-10 Issued November 2012

33

Reference ID 3213422

mid-line and tail defects In addition there was an increase in post-implantation loss associated with late resorptions No developmental toxicity was observed in rabbits at exposure levels approximately 3 times the MRHD (on an AUC basis at oral doses of 10 mgkgday)

Nonteratogenic effects In a peri- and postnatal rat study there were reductions in live litter size postnatal survival and pup body weights at exposure levels approximately 73 times the MRHD (on an AUC basis at oral doses of 50 mgkgday) There was no effect on behavioral and learning assessments sexual maturation or the ability of the F1 generation rats to mate and produce viable F2 generation fetuses in rats at exposure levels approximately 17 times the MRHD (on an AUC basis at oral doses of 10 mgkgday)

Pregnancy Registry To monitor the outcomes of pregnant women exposed to XELJANZ a pregnancy registry has been established Physicians are encouraged to register patients and pregnant women are encouraged to register themselves by calling 1-877-311-8972

83 Nursing Mothers Tofacitinib was secreted in milk of lactating rats It is not known whether tofacitinib is excreted in human milk Because many drugs are excreted in human milk and because of the potential for serious adverse reactions in nursing infants from tofacitinib a decision should be made whether to discontinue nursing or to discontinue the drug taking into account the importance of the drug for the mother

84 Pediatric Use The safety and effectiveness of XELJANZ in pediatric patients have not been established

85 Geriatric Use Of the 3315 patients who enrolled in Studies I to V a total of 505 rheumatoid arthritis patients were 65 years of age and older including 71 patients 75 years and older The frequency of serious infection among XELJANZ-treated subjects 65 years of age and older was higher than among those under the age of 65 As there is a higher incidence of infections in the elderly population in general caution should be used when treating the elderly

86 Hepatic Impairment No dose adjustment is required in patients with mild hepatic impairment XELJANZ dose should be reduced to 5 mg once daily in patients with moderate hepatic impairment The safety and efficacy of XELJANZ have not been studied in patients with severe hepatic impairment or in patients with positive hepatitis B virus or hepatitis C virus serology [see Dosage and Administration (21) and Warnings and Precautions (56)]

87 Renal Impairment No dose adjustment is required in patients with mild renal impairment XELJANZ dose should be reduced to 5 mg once daily in patients with moderate and severe renal impairment [see Dosage and Administration (21)] In clinical trials XELJANZ was not evaluated in rheumatoid arthritis patients with baseline creatinine clearance values (estimated by the Cockroft-Gault equation) less than 40 mLmin

14

Reference ID 3213422

10 OVERDOSAGE Signs Symptoms and Laboratory Findings of Acute Overdosage in Humans There is no experience with overdose of XELJANZ

Treatment or Management of Overdose Pharmacokinetic data up to and including a single dose of 100 mg in healthy volunteers indicate that more than 95 of the administered dose is expected to be eliminated within 24 hours

There is no specific antidote for overdose with XELJANZ In case of an overdose it is recommended that the patient be monitored for signs and symptoms of adverse reactions Patients who develop adverse reactions should receive appropriate treatment

11 DESCRIPTION XELJANZ is the citrate salt of tofacitinib a JAK inhibitor

Tofacitinib citrate is a white to off-white powder with the following chemical name (3R4R)-4shymethyl-3-(methyl-7H-pyrrolo [23-d]pyrimidin-4-ylamino)-szlig-oxo-1-piperidinepropanenitrile 2shyhydroxy-123-propanetricarboxylate (11) It is freely soluble in water

Tofacitinib citrate has a molecular weight of 5045 Daltons (or 3124 Daltons as the tofacitinib free base) and a molecular formula of C16H20N6ObullC6H8O7 The chemical structure of tofacitinib citrate is

NN

Me

Me

N

N N H

O N

HO2C CO2H

HO2C

OH bull

XELJANZ is supplied for oral administration as 5 mg tofacitinib (equivalent to 8 mg tofacitinib citrate) white round immediate-release film-coated tablet Each tablet of XELJANZ contains the appropriate amount of XELJANZ as a citrate salt and the following inactive ingredients microcrystalline cellulose lactose monohydrate croscarmellose sodium magnesium stearate HPMC 2910Hypromellose 6cP titanium dioxide macrogolPEG3350 and triacetin

12 CLINICAL PHARMACOLOGY

121 Mechanism of Action Tofacitinib is a Janus kinase (JAK) inhibitor JAKs are intracellular enzymes which transmit signals arising from cytokine or growth factor-receptor interactions on the cellular membrane to influence cellular processes of hematopoiesis and immune cell function Within the signaling pathway JAKs phosphorylate and activate Signal Transducers and Activators of Transcription (STATs) which modulate intracellular activity including gene expression Tofacitinib modulates

15

Reference ID 3213422

the signaling pathway at the point of JAKs preventing the phosphorylation and activation of STATs JAK enzymes transmit cytokine signaling through pairing of JAKs (eg JAK1JAK3 JAK1JAK2 JAK1TyK2 JAK2JAK2) Tofacitinib inhibited the in vitro activities of JAK1JAK2 JAK1JAK3 and JAK2JAK2 combinations with IC50 of 406 56 and 1377 nM respectively However the relevance of specific JAK combinations to therapeutic effectiveness is not known

122 Pharmacodynamics Treatment with XELJANZ was associated with dose-dependent reductions of circulating CD1656+ natural killer cells with estimated maximum reductions occurring at approximately 8shy10 weeks after initiation of therapy These changes generally resolved within 2-6 weeks after discontinuation of treatment Treatment with XELJANZ was associated with dose-dependent increases in B cell counts Changes in circulating T-lymphocyte counts and T-lymphocyte subsets (CD3+ CD4+ and CD8+) were small and inconsistent The clinical significance of these changes is unknown

Total serum IgG IgM and IgA levels after 6-month dosing in patients with rheumatoid arthritis were lower than placebo however changes were small and not dose-dependent

After treatment with XELJANZ in patients with rheumatoid arthritis rapid decreases in serum C-reactive protein (CRP) were observed and maintained throughout dosing Changes in CRP observed with XELJANZ treatment do not reverse fully within 2 weeks after discontinuation indicating a longer duration of pharmacodynamic activity compared to the pharmacokinetic half-life

123 Pharmacokinetics Following oral administration of XELJANZ peak plasma concentrations are reached within 05shy1 hour elimination half-life is ~3 hours and a dose-proportional increase in systemic exposure was observed in the therapeutic dose range Steady state concentrations are achieved in 24-48 hours with negligible accumulation after twice daily administration

Absorption The absolute oral bioavailability of tofacitinib is 74 Coadministration of XELJANZ with a high-fat meal resulted in no changes in AUC while Cmax was reduced by 32 In clinical trials XELJANZ was administered without regard to meals

Distribution After intravenous administration the volume of distribution is 87 L The protein binding of tofacitinib is ~40 Tofacitinib binds predominantly to albumin and does not appear to bind to 1-acid glycoprotein Tofacitinib distributes equally between red blood cells and plasma

Metabolism and Elimination Clearance mechanisms for tofacitinib are approximately 70 hepatic metabolism and 30 renal excretion of the parent drug The metabolism of tofacitinib is primarily mediated by CYP3A4 with minor contribution from CYP2C19 In a human radiolabeled study more than 65 of the total circulating radioactivity was accounted for by unchanged tofacitinib with the remaining

16

Reference ID 3213422

35 attributed to 8 metabolites each accounting for less than 8 of total radioactivity The pharmacologic activity of tofacitinib is attributed to the parent molecule

Pharmacokinetics in Rheumatoid Arthritis Patients Population PK analysis in rheumatoid arthritis patients indicated no clinically relevant change in tofacitinib exposure after accounting for differences in renal function (ie creatinine clearance) between patients based on age weight gender and race (Figure 1) An approximately linear relationship between body weight and volume of distribution was observed resulting in higher peak (Cmax) and lower trough (Cmin) concentrations in lighter patients However this difference is not considered to be clinically relevant The between-subject variability ( coefficient of variation) in AUC of tofacitinib is estimated to be approximately 27

Specific Populations The effect of renal and hepatic impairment and other intrinsic factors on the pharmacokinetics of tofacitinib is shown in Figure 1

17

Reference ID 3213422

Figure 1 Impact of Intrinsic Factors on Tofacitinib Pharmacokinetics

Intrinsic Factor

Weight = 40 kg

Weight = 140 kg

Age = 80 years

Female

Asian

Black

Hispanic

Renal Impairment (Mild)

Renal Impairment (Moderate)

Renal Impairment (Severe)

Hepatic Impairment (Mild)

Hepatic Impairment (Moderate)

PK

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

0

Ratio and 90 CI Recommendation

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

Reduce Dose to 5 mg Once Daily

Reduce Dose to 5 mg Once Daily

No Dose Adjustment

Reduce Dose to 5 mg Once Daily

05 1 15 2 25 3 35 4

Ratio relative to reference

Supplemental doses are not necessary in patients after dialysis

Reference values for weight age gender and race comparisons are 70 kg 55 years male and White respectively Reference groups for renal and hepatic impairment data are subjects with normal renal and hepatic function

Drug Interactions

Potential for XELJANZ to Influence the PK of Other Drugs In vitro studies indicate that tofacitinib does not significantly inhibit or induce the activity of the

18

Reference ID 3213422

major human drug-metabolizing CYPs (CYP1A2 CYP2B6 CYP2C8 CYP2C9 CYP2C19 CYP2D6 and CYP3A4) at concentrations exceeding 185 times the steady state Cmax of a 5 mg twice daily dose These in vitro results were confirmed by a human drug interaction study showing no changes in the PK of midazolam a highly sensitive CYP3A4 substrate when coadministered with XELJANZ

In rheumatoid arthritis patients the oral clearance of tofacitinib does not vary with time indicating that tofacitinib does not normalize CYP enzyme activity in rheumatoid arthritis patients Therefore coadministration with XELJANZ is not expected to result in clinically relevant increases in the metabolism of CYP substrates in rheumatoid arthritis patients

In vitro data indicate that the potential for tofacitinib to inhibit transporters such as Pshyglycoprotein organic anionic or cationic transporters at therapeutic concentrations is low

Dosing recommendations for coadministered drugs following administration with XELJANZ are shown in Figure 2

Figure 2 Impact of XELJANZ on PK of Other Drugs

Coadministered PK Drug

Methotrexate AUC

Cmax

CYP3A Substrate AUC Midazolam

Cmax

Oral ContraceptivesLevonorgestrel

AUC

Cmax

Ethinyl Estradiol AUC

Cmax

OCT amp MATE Substrate AUC Metformin

Cmax

Ratio and 90 CI Recommendation

No Dose Adjustment

No dose adjustment for CYP3A substrates such as midazolam

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

0 025 05 075 1 125 15 175 2

Ratio relative to reference

Note Reference group is administration of concomitant medication alone OCT = Organic Cationic Transporter MATE = Multidrug and Toxic Compound Extrusion

Potential for Other Drugs to Influence the PK of Tofacitinib Since tofacitinib is metabolized by CYP3A4 interaction with drugs that inhibit or induce CYP3A4 is likely Inhibitors of CYP2C19 alone or P-glycoprotein are unlikely to substantially alter the PK of tofacitinib Dosing recommendations for XELJANZ for administration with CYP inhibitors or inducers are shown in Figure 3

19

Reference ID 3213422

Figure 3 Impact of Other Drugs on PK of XELJANZ

Coadministered PK Drug

CYP3A Inhib itor AUC Ketoconazole

Cmax

CYP3A amp CYP2C19 Inhib itor AUC

Cmax Fluconazole

CYP Inducer Rifampin AUC

Cmax

Methotrexate AUC

Cmax

Tacrolimus AUC Cmax

Cyclosporine AUC

Cmax

Ratio and 90 CI Recommendation

Reduce XELJANZ Dose to 5 mg Once Daily

Reduce XELJANZ Dose to 5 mg Once Daily

May Decrease Efficacy

No Dose Adjustment

There is a risk of added immunosuppressionif XELJANZ is taken with Tacrolimus

There is a risk of added immunosuppressionif XELJANZ is taken with Cyclosporine

0 05 1 15 2 25

Ratio relative to reference

Note Reference group is administration of tofacitinib alone

13 NONCLINICAL TOXICOLOGY

131 Carcinogenesis Mutagenesis Impairment of Fertility In a 39-week toxicology study in monkeys tofacitinib at exposure levels approximately 6 times the MRHD (on an AUC basis at oral doses of 5 mgkg twice daily) produced lymphomas No lymphomas were observed in this study at exposure levels 1 times the MRHD (on an AUC basis at oral doses of 1 mgkg twice daily)

The carcinogenic potential of tofacitinib was assessed in 6-month rasH2 transgenic mouse carcinogenicity and 2-year rat carcinogenicity studies Tofacitinib at exposure levels approximately 34 times the MRHD (on an AUC basis at oral doses of 200 mgkgday) was not carcinogenic in mice

In the 24-month oral carcinogenicity study in Sprague-Dawley rats tofacitinib caused benign Leydig cell tumors hibernomas (malignancy of brown adipose tissue) and benign thymomas at doses greater than or equal to 30 mgkgday (approximately 42 times the exposure levels at the MRHD on an AUC basis) The relevance of benign Leydig cell tumors to human risk is not known

20

Reference ID 3213422

Tofacitinib was not mutagenic in the bacterial reverse mutation assay It was positive for clastogenicity in the in vitro chromosome aberration assay with human lymphocytes in the presence of metabolic enzymes but negative in the absence of metabolic enzymes Tofacitinib was negative in the in vivo rat micronucleus assay and in the in vitro CHO-HGPRT assay and the in vivo rat hepatocyte unscheduled DNA synthesis assay

In rats tofacitinib at exposure levels approximately 17 times the MRHD (on an AUC basis at oral doses of 10 mgkgday) reduced female fertility due to increased post-implantation loss There was no impairment of female rat fertility at exposure levels of tofacitinib equal to the MRHD (on an AUC basis at oral doses of 1 mgkgday) Tofacitinib exposure levels at approximately 133 times the MRHD (on an AUC basis at oral doses of 100 mgkgday) had no effect on male fertility sperm motility or sperm concentration

14 CLINICAL STUDIES The XELJANZ clinical development program included two dose-ranging trials and five confirmatory trials

DOSE-RANGING TRIALS Dose selection for XELJANZ was based on two pivotal dose-ranging trials

Dose-Ranging Study 1 was a 6-month monotherapy trial in 384 patients with active rheumatoid arthritis who had an inadequate response to a DMARD Patients who previously received adalimumab therapy were excluded Patients were randomized to 1 of 7 monotherapy treatments XELJANZ 1 3 5 10 or 15 mg twice daily adalimumab 40 mg subcutaneously every other week for 10 weeks followed by XELJANZ 5 mg twice daily for 3 months or placebo

Dose-Ranging Study 2 was a 6-month trial in which 507 patients with active rheumatoid arthritis who had an inadequate response to MTX alone received one of 6 dose regimens of XELJANZ (20 mg once daily 1 3 5 10 or 15 mg twice daily) or placebo added to background MTX

The results of XELJANZ-treated patients achieving ACR20 responses in Studies 1 and 2 are shown in Figure 4 Although a dose-response relationship was observed in Study 1 the proportion of patients with an ACR20 response did not clearly differ between the 10 mg and 15 mg doses Furthermore there was a smaller proportion of patients who responded to adalimumab monotherapy compared to those treated with XELJANZ doses 3 mg twice daily and greater In Study 2 a smaller proportion of patients achieved an ACR20 response in the placebo and XELJANZ 1 mg groups compared to patients treated with the other XELJANZ doses However there was no difference in the proportion of responders among patients treated with XELJANZ 3 5 10 15 mg twice daily or 20 mg once daily doses

21

Reference ID 3213422

Figure 4 Proportion of Patients with ACR20 Response at Month 3 in Dose-Ranging Studies 1 and 2

CONFIRMATORY TRIALS Study I was a 6-month monotherapy trial in which 610 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to a DMARD (nonbiologic or biologic) received XELJANZ 5 or 10 mg twice daily or placebo At the Month 3 visit all patients randomized to placebo treatment were advanced in a blinded fashion to a second predetermined treatment of XELJANZ 5 or 10 mg twice daily The primary endpoints at Month 3 were the proportion of patients who achieved an ACR20 response changes in Health Assessment Questionnaire ndash Disability Index (HAQ-DI) and rates of Disease Activity Score DAS28-4(ESR) less than 26

Study II was a 12-month trial in which 792 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to a nonbiologic DMARD received XELJANZ 5 or 10 mg twice daily or placebo added to background DMARD treatment (excluding potent immunosuppressive treatments such as azathioprine or cyclosporine) At the Month 3 visit nonresponding patients were advanced in a blinded fashion to a second predetermined treatment of XELJANZ 5 or 10 mg twice daily At the end of Month 6 all placebo patients were advanced to their second predetermined treatment in a blinded fashion The primary endpoints were the proportion of patients who achieved an ACR20 response at Month 6 changes in HAQ-DI at Month 3 and rates of DAS28-4(ESR) less than 26 at Month 6

Study III was a 12-month trial in 717 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to MTX Patients received XELJANZ 5 or 10 mg twice daily adalimumab 40 mg subcutaneously every other week or placebo added to background MTX

22

Reference ID 3213422

Placebo patients were advanced as in Study II The primary endpoints were the proportion of patients who achieved an ACR20 response at Month 6 HAQ-DI at Month 3 and DAS28-4(ESR) less than 26 at Month 6

Study IV is an ongoing 2-year trial with a planned analysis at 1 year in which 797 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to MTX received XELJANZ 5 or 10 mg twice daily or placebo added to background MTX Placebo patients were advanced as in Study II The primary endpoints were the proportion of patients who achieved an ACR20 response at Month 6 mean change from baseline in van der Heijde-modified total Sharp Score (mTSS) at Month 6 HAQ-DI at Month 3 and DAS28-4(ESR) less than 26 at Month 6

Study V was a 6-month trial in which 399 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to at least one approved TNF-inhibiting biologic agent received XELJANZ 5 or 10 mg twice daily or placebo added to background MTX At the Month 3 visit all patients randomized to placebo treatment were advanced in a blinded fashion to a second predetermined treatment of XELJANZ 5 or 10 mg twice daily The primary endpoints at Month 3 were the proportion of patients who achieved an ACR20 response HAQ-DI and DAS28-4(ESR) less than 26

Clinical Response The percentages of XELJANZ-treated patients achieving ACR20 ACR50 and ACR70 responses in Studies I IV and V are shown in Table 5 Similar results were observed with Studies II and III In all trials patients treated with either 5 or 10 mg twice daily XELJANZ had higher ACR20 ACR50 and ACR70 response rates versus placebo with or without background DMARD treatment at Month 3 and Month 6 Higher ACR20 response rates were observed within 2 weeks compared to placebo In the 12-month trials ACR response rates in XELJANZ-treated patients were consistent at 6 and 12 months

23

Reference ID 3213422

Table 5 Proportion of Patients with an ACR Response Percent of Patients

Monotherapy in Nonbiologic or Biologic DMARD Inadequate

Respondersc

MTX Inadequate Respondersd TNF Inhibitor Inadequate Responderse

Study I Study IV Study V

Na PBO

122

XELJANZ 5 mg Twice

Daily

243

XELJANZ 10 mg Twice Daily

245

PBO + MTX

160

XELJANZ 5 mg Twice

Daily + MTX

321

XELJANZ 10 mg Twice

Daily + MTX

316

PBO +

MTX

132

XELJANZ 5 mg Twice

Daily + MTX

133

XELJANZ 10 mg Twice

Daily + MTX

134 ACR20 Month 3 Month 6

26 NAb

59 69

65 70

27 25

55 50

67 62

24 NA

41 51

48 54

ACR50 Month 3 Month 6

12 NA

31 42

36 46

8 9

29 32

37 44

8 NA

26 37

28 30

ACR70 Month 3 Month 6

6 NA

15 22

20 29

3 1

11 14

17 23

2 NA

14 16

10 16

a N is number of randomized and treated patients b NA Not applicable as data for placebo treatment is not available beyond 3 months in Studies I and V due to placebo advancement c Inadequate response to at least one DMARD (biologic or nonbiologic) due to lack of efficacy or toxicity d Inadequate response to MTX defined as the presence of sufficient residual disease activity to meet the entry criteria e Inadequate response to a least one TNF inhibitor due to lack of efficacy andor intolerance

In Study IV a greater proportion of patients treated with XELJANZ 5 mg or 10 mg twice daily plus MTX achieved a low level of disease activity as measured by a DAS28-4(ESR) less than 26 at 6 months compared to those treated with MTX alone (Table 6)

24

Reference ID 3213422

Table 6 Proportion of Patients with DAS28-4(ESR) Less Than 26 with Number of Residual Active Joints Study IV DAS28-4(ESR) Less Than 26 Placebo + MTX

160

XELJANZ 5 mg Twice Daily + MTX

321

XELJANZ 10 mg Twice Daily + MTX

316 Proportion of responders at Month 6 (n) 1 (2) 6 (19) 13 (42)

Of responders proportion with 0 active joints (n)

50 (1) 42 (8) 36 (15)

Of responders proportion with 1 active joint (n) 0 5 (1) 17 (7) Of responders proportion with 2 active joints (n)

0 32 (6) 7 (3)

Of responders proportion with 3 or more active joints (n)

50 (1) 21 (4) 40 (17)

The results of the components of the ACR response criteria for Study IV are shown in Table 7 Similar results were observed in Studies I II III and V

Table 7 Components of ACR Response at 3 Months Study IV

XELJANZ

5 mg

Twice Daily + MTX

N=321

XELJANZ

10 mg

Twice Daily + MTX

N=316

Placebo + MTX

N=160

Component (mean) a Baseline Month 3a Baseline Month 3a Baseline Month 3a

Number of tender

joints 24 13 23 10 23 18

(0-68) (14) (14) (15) (12) (13) (14)

Number of swollen

joints 14 6 14 6 14 10

(0-66) (8) (8) (8) (7) (9) (9)

Painb 58

(23)

34

(23)

58

(24)

29

(22)

55

(24)

47

(24)

Patient global

assessmentb

58

(24)

35

(23)

57

(23)

29

(20)

54

(23)

47

(24)

Disability index

(HAQ-DI)c 141 099 140 084 132 119

(068) (065) (066) (064) (067) (068)

25

Reference ID 3213422

Physician global

assessmentb 59 30 58 24 56 43

(16) (19) (17) (17) (18) (22)

CRP (mgL) 153 71 171 44 137 146

(190) (191) (269) (86) (149) (187) aData shown is mean (Standard Deviation) at Month 3bVisual analog scale 0 = best 100 = worst cHealth Assessment Questionnaire Disability Index 0 = best 3 = worst 20 questions categories dressing and grooming arising eating walking hygiene reach grip and activities

The percent of ACR20 responders by visit for Study IV is shown in Figure 5 Similar responses were observed in Studies I II III and V

Figure 5 Percentage of ACR20 Responders by Visit for Study IV

Physical Function Response Improvement in physical functioning was measured by the HAQ-DI Patients receiving XELJANZ 5 and 10 mg twice daily demonstrated greater improvement from baseline in physical functioning compared to placebo at Month 3

The mean (95 CI) difference from placebo in HAQ-DI improvement from baseline at Month 3 in Study III was -022 (-035 -010) in patients receiving 5 mg XELJANZ twice daily and -032 (-044 -019) in patients receiving 10 mg XELJANZ twice daily Similar results were obtained in

26

Reference ID 3213422

Studies I II IV and V In the 12-month trials HAQ-DI results in XELJANZ-treated patients were consistent at 6 and 12 months

16 HOW SUPPLIEDSTORAGE AND HANDLING XELJANZ is provided as 5 mg tofacitinib (equivalent to 8 mg tofacitinib citrate) tablets White round immediate-release film-coated tablets debossed with ldquoPfizerrdquo on one side and ldquoJKI 5rdquo on the other side and available in

Bottles of 60 NDC 0069-1001-01 Bottles of 180 NDC 0069-1001-02

Storage and Handling Store at 20degC to 25degC (68degF to 77degF) [See USP Controlled Room Temperature]

Do not repackage

17 PATIENT COUNSELING INFORMATION See FDA-approved patient labeling (Medication Guide)

Inform patients of the availability of a Medication Guide and instruct them to read the Medication Guide prior to taking XELJANZ Instruct patients to take XELJANZ only as prescribed

This productrsquos label may have been updated For current full prescribing information please visit wwwpfizercom

LAB-0445-10

27

Reference ID 3213422

MEDICATION GUIDE

XELJANZ (ZELrsquo JANSrsquo) (tofacitinib)

Read this Medication Guide before you start taking XELJANZ and each time you get a refill There may be new information This Medication Guide does not take the place of talking to your healthcare provider about your medical condition or treatment

What is the most important information I should know about XELJANZ XELJANZ may cause serious side effects including

1 Serious infections

XELJANZ is a medicine that affects your immune system XELJANZ can lower the ability of your immune system to fight infections Some people have serious infections while taking XELJANZ including tuberculosis (TB) and infections caused by bacteria fungi or viruses that can spread throughout the body Some people have died from these infections Your healthcare provider should test you for TB before starting XELJANZ Your healthcare provider should monitor you closely for signs and symptoms of

TB infection during treatment with XELJANZ

You should not start taking XELJANZ if you have any kind of infection unless your healthcare provider tells you it is okay

Before starting XELJANZ tell your healthcare provider if you think you have an infection or have symptoms of an infection such as

o fever sweating or chills o warm red or painful skin o muscle aches or sores on your body o cough o diarrhea or stomach pain o shortness of breath o burning when you urinate o blood in phlegm or urinating more often o weight loss than normal

o feeling very tired are being treated for an infection get a lot of infections or have infections that keep coming back have diabetes HIV or a weak immune system People with these conditions

have a higher chance for infections have TB or have been in close contact with someone with TB live or have lived or have traveled to certain parts of the country (such as the

Ohio and Mississippi River valleys and the Southwest) where there is an increased chance for getting certain kinds of fungal infections (histoplasmosis coccidioidomycosis or blastomycosis) These infections may happen or become more severe if you use XELJANZ Ask your healthcare provider if you do not know if you have lived in an area where these infections are common

have or have had hepatitis B or C

28

Reference ID 3213422

After starting XELJANZ call your healthcare provider right away if you have any symptoms of an infection XELJANZ can make you more likely to get infections or make worse any infection that you have

2 Cancer and immune system problems

XELJANZ may increase your risk of certain cancers by changing the way your immune system works

Lymphoma and other cancers can happen in patients taking XELJANZ Tell your healthcare provider if you have ever had any type of cancer

Some people who have taken XELJANZ with certain other medicines to prevent kidney transplant rejection have had a problem with certain white blood cells growing out of control (Epstein Barr Virus-associated post transplant lymphoproliferative disorder)

3 Tears (perforation) in the stomach or intestines

Tell your healthcare provider if you have had diverticulitis (inflammation in parts of the large intestine) or ulcers in your stomach or intestines Some people taking XELJANZ get tears in their stomach or intestine This happens most often in people who also take nonsteroidal anti-inflammatory drugs (NSAIDs) corticosteroids or methotrexate

Tell your healthcare provider right away if you have fever and stomach-area pain that does not go away and a change in your bowel habits

4 Changes in certain laboratory test results Your healthcare provider should do blood tests before you start receiving XELJANZ and while you take XELJANZ to check for the following side effects

changes in lymphocyte counts Lymphocytes are white blood cells that help the body fight off infections

low neutrophil counts Neutrophils are white blood cells that help the body fight off infections

low red blood cell count This may mean that you have anemia which may make you feel weak and tired

Your healthcare provider should routinely check certain liver tests

You should not receive XELJANZ if your lymphocyte count neutrophil count or red blood cell count is too low or your liver tests are too high

Your healthcare provider may stop your XELJANZ treatment for a period of time if needed because of changes in these blood test results

29

Reference ID 3213422

You may also have changes in other laboratory tests such as your blood cholesterol levels Your healthcare provider should do blood tests to check your cholesterol levels 4 to 8 weeks after you start receiving XELJANZ and as needed after that Normal cholesterol levels are important to good heart health

See ldquoWhat are the possible side effects of XELJANZrdquo for more information about side effects

What is XELJANZ

XELJANZ is a prescription medicine called a Janus kinase (JAK) inhibitor XELJANZ is used to treat adults with moderately to severely active rheumatoid arthritis in which methotrexate did not work well

It is not known if XELJANZ is safe and effective in people with Hepatitis B or C

XELJANZ is not for people with severe liver problems

It is not known if XELJANZ is safe and effective in children

What should I tell my healthcare provider before taking XELJANZ

XELJANZ may not be right for you Before taking XELJANZ tell your healthcare provider if you have an infection See ldquoWhat is the most important information I should know

about XELJANZrdquo have liver problems have kidney problems have any stomach area (abdominal) pain or been diagnosed with diverticulitis or

ulcers in your stomach or intestines have had a reaction to tofacitinib or any of the ingredients in XELJANZ have recently received or are scheduled to receive a vaccine People who take

XELJANZ should not receive live vaccines People taking XELJANZ can receive non-live vaccines

have any other medical conditions plan to become pregnant or are pregnant It is not known if XELJANZ will harm

an unborn baby

Pregnancy Registry Pfizer has a registry for pregnant women who take XELJANZ The purpose of this registry is to check the health of the pregnant mother and her baby If you are pregnant or become pregnant while taking XELJANZ talk to your healthcare provider about how you can join this pregnancy registry or you may contact the registry at 1-877-311-8972 to enroll

plan to breastfeed or are breastfeeding You and your healthcare provider should decide if you will take XELJANZ or breastfeed You should not do both

30

Reference ID 3213422

Tell your healthcare provider about all the medicines you take including prescription and non-prescription medicines vitamins and herbal supplements XELJANZ and other medicines may affect each other causing side effects

Especially tell your healthcare provider if you take any other medicines to treat your rheumatoid arthritis You should not take

tocilizumab (Actemrareg) etanercept (Enbrelreg) adalimumab (Humirareg) infliximab (Remicadereg) rituximab (Rituxanreg) abatacept (Orenciareg) anakinra (Kineretreg) certolizumab (Cimziareg) golimumab (Simponireg) azathioprine cyclosporine or other immunosuppressive drugs while you are taking XELJANZ Taking XELJANZ with these medicines may increase your risk of infection

medicines that affect the way certain liver enzymes work Ask your healthcare provider if you are not sure if your medicine is one of these

Know the medicines you take Keep a list of them to show your healthcare provider and pharmacist when you get a new medicine

How should I take XELJANZ

Take XELJANZ as your healthcare provider tells you to take it

Take XELJANZ 2 times a day with or without food

If you take too much XELJANZ call your healthcare provider or go the nearest hospital emergency room right away

What are possible side effects of XELJANZ

XELJANZ may cause serious side effects including

See ldquoWhat is the most important information I should know about XELJANZrdquo

Hepatitis B or C activation infection in people who carry the virus in their blood If you are a carrier of the hepatitis B or C virus (viruses that affect the liver) the virus may become active while you use XELJANZ Your healthcare provider may do blood tests before you start treatment with XELJANZ and while you are using XELJANZ Tell your healthcare provider if you have any of the following symptoms of a possible hepatitis B or C infection

o feel very tired o fevers o skin or eyes look yellow o chills o little or no appetite o stomach discomfort o vomiting o muscle aches o clay-colored bowel o dark urine

movements o skin rash

31

Reference ID 3213422

Common side effects of XELJANZ include upper respiratory tract infections (common cold sinus infections) headache diarrhea nasal congestion sore throat and runny nose (nasopharyngitis)

Tell your healthcare provider if you have any side effect that bothers you or that does not go away

These are not all the possible side effects of XELJANZ For more information ask your healthcare provider or pharmacist

Call your doctor for medical advice about side effects You may report side effects to FDA at 1-800-FDA-1088

You may also report side effects to Pfizer at 1-800-438-1985

How should I store XELJANZ

Store XELJANZ at 68degF to 77degF (room temperature)

Safely throw away medicine that is out of date or no longer needed

Keep XELJANZ and all medicines out of the reach of children

General information about the safe and effective use of XELJANZ

Medicines are sometimes prescribed for purposes other than those listed in a Medication Guide Do not use XELJANZ for a condition for which it was not prescribed Do not give XELJANZ to other people even if they have the same symptoms you have It may harm them

This Medication Guide summarizes the most important information about XELJANZ If you would like more information talk to your healthcare provider You can ask your pharmacist or healthcare provider for information about XELJANZ that is written for health professionals

What are the ingredients in XELJANZ

Active ingredient tofacitinib citrate

Inactive ingredients microcrystalline cellulose lactose monohydrate croscarmellose sodium magnesium stearate HPMC 2910Hypromellose 6cP titanium dioxide macrogolPEG3350 and triacetin

32

Reference ID 3213422

This Medication Guide has been approved by the US Food and Drug Administration

LAB-0535-10 Issued November 2012

33

Reference ID 3213422

10 OVERDOSAGE Signs Symptoms and Laboratory Findings of Acute Overdosage in Humans There is no experience with overdose of XELJANZ

Treatment or Management of Overdose Pharmacokinetic data up to and including a single dose of 100 mg in healthy volunteers indicate that more than 95 of the administered dose is expected to be eliminated within 24 hours

There is no specific antidote for overdose with XELJANZ In case of an overdose it is recommended that the patient be monitored for signs and symptoms of adverse reactions Patients who develop adverse reactions should receive appropriate treatment

11 DESCRIPTION XELJANZ is the citrate salt of tofacitinib a JAK inhibitor

Tofacitinib citrate is a white to off-white powder with the following chemical name (3R4R)-4shymethyl-3-(methyl-7H-pyrrolo [23-d]pyrimidin-4-ylamino)-szlig-oxo-1-piperidinepropanenitrile 2shyhydroxy-123-propanetricarboxylate (11) It is freely soluble in water

Tofacitinib citrate has a molecular weight of 5045 Daltons (or 3124 Daltons as the tofacitinib free base) and a molecular formula of C16H20N6ObullC6H8O7 The chemical structure of tofacitinib citrate is

NN

Me

Me

N

N N H

O N

HO2C CO2H

HO2C

OH bull

XELJANZ is supplied for oral administration as 5 mg tofacitinib (equivalent to 8 mg tofacitinib citrate) white round immediate-release film-coated tablet Each tablet of XELJANZ contains the appropriate amount of XELJANZ as a citrate salt and the following inactive ingredients microcrystalline cellulose lactose monohydrate croscarmellose sodium magnesium stearate HPMC 2910Hypromellose 6cP titanium dioxide macrogolPEG3350 and triacetin

12 CLINICAL PHARMACOLOGY

121 Mechanism of Action Tofacitinib is a Janus kinase (JAK) inhibitor JAKs are intracellular enzymes which transmit signals arising from cytokine or growth factor-receptor interactions on the cellular membrane to influence cellular processes of hematopoiesis and immune cell function Within the signaling pathway JAKs phosphorylate and activate Signal Transducers and Activators of Transcription (STATs) which modulate intracellular activity including gene expression Tofacitinib modulates

15

Reference ID 3213422

the signaling pathway at the point of JAKs preventing the phosphorylation and activation of STATs JAK enzymes transmit cytokine signaling through pairing of JAKs (eg JAK1JAK3 JAK1JAK2 JAK1TyK2 JAK2JAK2) Tofacitinib inhibited the in vitro activities of JAK1JAK2 JAK1JAK3 and JAK2JAK2 combinations with IC50 of 406 56 and 1377 nM respectively However the relevance of specific JAK combinations to therapeutic effectiveness is not known

122 Pharmacodynamics Treatment with XELJANZ was associated with dose-dependent reductions of circulating CD1656+ natural killer cells with estimated maximum reductions occurring at approximately 8shy10 weeks after initiation of therapy These changes generally resolved within 2-6 weeks after discontinuation of treatment Treatment with XELJANZ was associated with dose-dependent increases in B cell counts Changes in circulating T-lymphocyte counts and T-lymphocyte subsets (CD3+ CD4+ and CD8+) were small and inconsistent The clinical significance of these changes is unknown

Total serum IgG IgM and IgA levels after 6-month dosing in patients with rheumatoid arthritis were lower than placebo however changes were small and not dose-dependent

After treatment with XELJANZ in patients with rheumatoid arthritis rapid decreases in serum C-reactive protein (CRP) were observed and maintained throughout dosing Changes in CRP observed with XELJANZ treatment do not reverse fully within 2 weeks after discontinuation indicating a longer duration of pharmacodynamic activity compared to the pharmacokinetic half-life

123 Pharmacokinetics Following oral administration of XELJANZ peak plasma concentrations are reached within 05shy1 hour elimination half-life is ~3 hours and a dose-proportional increase in systemic exposure was observed in the therapeutic dose range Steady state concentrations are achieved in 24-48 hours with negligible accumulation after twice daily administration

Absorption The absolute oral bioavailability of tofacitinib is 74 Coadministration of XELJANZ with a high-fat meal resulted in no changes in AUC while Cmax was reduced by 32 In clinical trials XELJANZ was administered without regard to meals

Distribution After intravenous administration the volume of distribution is 87 L The protein binding of tofacitinib is ~40 Tofacitinib binds predominantly to albumin and does not appear to bind to 1-acid glycoprotein Tofacitinib distributes equally between red blood cells and plasma

Metabolism and Elimination Clearance mechanisms for tofacitinib are approximately 70 hepatic metabolism and 30 renal excretion of the parent drug The metabolism of tofacitinib is primarily mediated by CYP3A4 with minor contribution from CYP2C19 In a human radiolabeled study more than 65 of the total circulating radioactivity was accounted for by unchanged tofacitinib with the remaining

16

Reference ID 3213422

35 attributed to 8 metabolites each accounting for less than 8 of total radioactivity The pharmacologic activity of tofacitinib is attributed to the parent molecule

Pharmacokinetics in Rheumatoid Arthritis Patients Population PK analysis in rheumatoid arthritis patients indicated no clinically relevant change in tofacitinib exposure after accounting for differences in renal function (ie creatinine clearance) between patients based on age weight gender and race (Figure 1) An approximately linear relationship between body weight and volume of distribution was observed resulting in higher peak (Cmax) and lower trough (Cmin) concentrations in lighter patients However this difference is not considered to be clinically relevant The between-subject variability ( coefficient of variation) in AUC of tofacitinib is estimated to be approximately 27

Specific Populations The effect of renal and hepatic impairment and other intrinsic factors on the pharmacokinetics of tofacitinib is shown in Figure 1

17

Reference ID 3213422

Figure 1 Impact of Intrinsic Factors on Tofacitinib Pharmacokinetics

Intrinsic Factor

Weight = 40 kg

Weight = 140 kg

Age = 80 years

Female

Asian

Black

Hispanic

Renal Impairment (Mild)

Renal Impairment (Moderate)

Renal Impairment (Severe)

Hepatic Impairment (Mild)

Hepatic Impairment (Moderate)

PK

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

0

Ratio and 90 CI Recommendation

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

Reduce Dose to 5 mg Once Daily

Reduce Dose to 5 mg Once Daily

No Dose Adjustment

Reduce Dose to 5 mg Once Daily

05 1 15 2 25 3 35 4

Ratio relative to reference

Supplemental doses are not necessary in patients after dialysis

Reference values for weight age gender and race comparisons are 70 kg 55 years male and White respectively Reference groups for renal and hepatic impairment data are subjects with normal renal and hepatic function

Drug Interactions

Potential for XELJANZ to Influence the PK of Other Drugs In vitro studies indicate that tofacitinib does not significantly inhibit or induce the activity of the

18

Reference ID 3213422

major human drug-metabolizing CYPs (CYP1A2 CYP2B6 CYP2C8 CYP2C9 CYP2C19 CYP2D6 and CYP3A4) at concentrations exceeding 185 times the steady state Cmax of a 5 mg twice daily dose These in vitro results were confirmed by a human drug interaction study showing no changes in the PK of midazolam a highly sensitive CYP3A4 substrate when coadministered with XELJANZ

In rheumatoid arthritis patients the oral clearance of tofacitinib does not vary with time indicating that tofacitinib does not normalize CYP enzyme activity in rheumatoid arthritis patients Therefore coadministration with XELJANZ is not expected to result in clinically relevant increases in the metabolism of CYP substrates in rheumatoid arthritis patients

In vitro data indicate that the potential for tofacitinib to inhibit transporters such as Pshyglycoprotein organic anionic or cationic transporters at therapeutic concentrations is low

Dosing recommendations for coadministered drugs following administration with XELJANZ are shown in Figure 2

Figure 2 Impact of XELJANZ on PK of Other Drugs

Coadministered PK Drug

Methotrexate AUC

Cmax

CYP3A Substrate AUC Midazolam

Cmax

Oral ContraceptivesLevonorgestrel

AUC

Cmax

Ethinyl Estradiol AUC

Cmax

OCT amp MATE Substrate AUC Metformin

Cmax

Ratio and 90 CI Recommendation

No Dose Adjustment

No dose adjustment for CYP3A substrates such as midazolam

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

0 025 05 075 1 125 15 175 2

Ratio relative to reference

Note Reference group is administration of concomitant medication alone OCT = Organic Cationic Transporter MATE = Multidrug and Toxic Compound Extrusion

Potential for Other Drugs to Influence the PK of Tofacitinib Since tofacitinib is metabolized by CYP3A4 interaction with drugs that inhibit or induce CYP3A4 is likely Inhibitors of CYP2C19 alone or P-glycoprotein are unlikely to substantially alter the PK of tofacitinib Dosing recommendations for XELJANZ for administration with CYP inhibitors or inducers are shown in Figure 3

19

Reference ID 3213422

Figure 3 Impact of Other Drugs on PK of XELJANZ

Coadministered PK Drug

CYP3A Inhib itor AUC Ketoconazole

Cmax

CYP3A amp CYP2C19 Inhib itor AUC

Cmax Fluconazole

CYP Inducer Rifampin AUC

Cmax

Methotrexate AUC

Cmax

Tacrolimus AUC Cmax

Cyclosporine AUC

Cmax

Ratio and 90 CI Recommendation

Reduce XELJANZ Dose to 5 mg Once Daily

Reduce XELJANZ Dose to 5 mg Once Daily

May Decrease Efficacy

No Dose Adjustment

There is a risk of added immunosuppressionif XELJANZ is taken with Tacrolimus

There is a risk of added immunosuppressionif XELJANZ is taken with Cyclosporine

0 05 1 15 2 25

Ratio relative to reference

Note Reference group is administration of tofacitinib alone

13 NONCLINICAL TOXICOLOGY

131 Carcinogenesis Mutagenesis Impairment of Fertility In a 39-week toxicology study in monkeys tofacitinib at exposure levels approximately 6 times the MRHD (on an AUC basis at oral doses of 5 mgkg twice daily) produced lymphomas No lymphomas were observed in this study at exposure levels 1 times the MRHD (on an AUC basis at oral doses of 1 mgkg twice daily)

The carcinogenic potential of tofacitinib was assessed in 6-month rasH2 transgenic mouse carcinogenicity and 2-year rat carcinogenicity studies Tofacitinib at exposure levels approximately 34 times the MRHD (on an AUC basis at oral doses of 200 mgkgday) was not carcinogenic in mice

In the 24-month oral carcinogenicity study in Sprague-Dawley rats tofacitinib caused benign Leydig cell tumors hibernomas (malignancy of brown adipose tissue) and benign thymomas at doses greater than or equal to 30 mgkgday (approximately 42 times the exposure levels at the MRHD on an AUC basis) The relevance of benign Leydig cell tumors to human risk is not known

20

Reference ID 3213422

Tofacitinib was not mutagenic in the bacterial reverse mutation assay It was positive for clastogenicity in the in vitro chromosome aberration assay with human lymphocytes in the presence of metabolic enzymes but negative in the absence of metabolic enzymes Tofacitinib was negative in the in vivo rat micronucleus assay and in the in vitro CHO-HGPRT assay and the in vivo rat hepatocyte unscheduled DNA synthesis assay

In rats tofacitinib at exposure levels approximately 17 times the MRHD (on an AUC basis at oral doses of 10 mgkgday) reduced female fertility due to increased post-implantation loss There was no impairment of female rat fertility at exposure levels of tofacitinib equal to the MRHD (on an AUC basis at oral doses of 1 mgkgday) Tofacitinib exposure levels at approximately 133 times the MRHD (on an AUC basis at oral doses of 100 mgkgday) had no effect on male fertility sperm motility or sperm concentration

14 CLINICAL STUDIES The XELJANZ clinical development program included two dose-ranging trials and five confirmatory trials

DOSE-RANGING TRIALS Dose selection for XELJANZ was based on two pivotal dose-ranging trials

Dose-Ranging Study 1 was a 6-month monotherapy trial in 384 patients with active rheumatoid arthritis who had an inadequate response to a DMARD Patients who previously received adalimumab therapy were excluded Patients were randomized to 1 of 7 monotherapy treatments XELJANZ 1 3 5 10 or 15 mg twice daily adalimumab 40 mg subcutaneously every other week for 10 weeks followed by XELJANZ 5 mg twice daily for 3 months or placebo

Dose-Ranging Study 2 was a 6-month trial in which 507 patients with active rheumatoid arthritis who had an inadequate response to MTX alone received one of 6 dose regimens of XELJANZ (20 mg once daily 1 3 5 10 or 15 mg twice daily) or placebo added to background MTX

The results of XELJANZ-treated patients achieving ACR20 responses in Studies 1 and 2 are shown in Figure 4 Although a dose-response relationship was observed in Study 1 the proportion of patients with an ACR20 response did not clearly differ between the 10 mg and 15 mg doses Furthermore there was a smaller proportion of patients who responded to adalimumab monotherapy compared to those treated with XELJANZ doses 3 mg twice daily and greater In Study 2 a smaller proportion of patients achieved an ACR20 response in the placebo and XELJANZ 1 mg groups compared to patients treated with the other XELJANZ doses However there was no difference in the proportion of responders among patients treated with XELJANZ 3 5 10 15 mg twice daily or 20 mg once daily doses

21

Reference ID 3213422

Figure 4 Proportion of Patients with ACR20 Response at Month 3 in Dose-Ranging Studies 1 and 2

CONFIRMATORY TRIALS Study I was a 6-month monotherapy trial in which 610 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to a DMARD (nonbiologic or biologic) received XELJANZ 5 or 10 mg twice daily or placebo At the Month 3 visit all patients randomized to placebo treatment were advanced in a blinded fashion to a second predetermined treatment of XELJANZ 5 or 10 mg twice daily The primary endpoints at Month 3 were the proportion of patients who achieved an ACR20 response changes in Health Assessment Questionnaire ndash Disability Index (HAQ-DI) and rates of Disease Activity Score DAS28-4(ESR) less than 26

Study II was a 12-month trial in which 792 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to a nonbiologic DMARD received XELJANZ 5 or 10 mg twice daily or placebo added to background DMARD treatment (excluding potent immunosuppressive treatments such as azathioprine or cyclosporine) At the Month 3 visit nonresponding patients were advanced in a blinded fashion to a second predetermined treatment of XELJANZ 5 or 10 mg twice daily At the end of Month 6 all placebo patients were advanced to their second predetermined treatment in a blinded fashion The primary endpoints were the proportion of patients who achieved an ACR20 response at Month 6 changes in HAQ-DI at Month 3 and rates of DAS28-4(ESR) less than 26 at Month 6

Study III was a 12-month trial in 717 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to MTX Patients received XELJANZ 5 or 10 mg twice daily adalimumab 40 mg subcutaneously every other week or placebo added to background MTX

22

Reference ID 3213422

Placebo patients were advanced as in Study II The primary endpoints were the proportion of patients who achieved an ACR20 response at Month 6 HAQ-DI at Month 3 and DAS28-4(ESR) less than 26 at Month 6

Study IV is an ongoing 2-year trial with a planned analysis at 1 year in which 797 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to MTX received XELJANZ 5 or 10 mg twice daily or placebo added to background MTX Placebo patients were advanced as in Study II The primary endpoints were the proportion of patients who achieved an ACR20 response at Month 6 mean change from baseline in van der Heijde-modified total Sharp Score (mTSS) at Month 6 HAQ-DI at Month 3 and DAS28-4(ESR) less than 26 at Month 6

Study V was a 6-month trial in which 399 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to at least one approved TNF-inhibiting biologic agent received XELJANZ 5 or 10 mg twice daily or placebo added to background MTX At the Month 3 visit all patients randomized to placebo treatment were advanced in a blinded fashion to a second predetermined treatment of XELJANZ 5 or 10 mg twice daily The primary endpoints at Month 3 were the proportion of patients who achieved an ACR20 response HAQ-DI and DAS28-4(ESR) less than 26

Clinical Response The percentages of XELJANZ-treated patients achieving ACR20 ACR50 and ACR70 responses in Studies I IV and V are shown in Table 5 Similar results were observed with Studies II and III In all trials patients treated with either 5 or 10 mg twice daily XELJANZ had higher ACR20 ACR50 and ACR70 response rates versus placebo with or without background DMARD treatment at Month 3 and Month 6 Higher ACR20 response rates were observed within 2 weeks compared to placebo In the 12-month trials ACR response rates in XELJANZ-treated patients were consistent at 6 and 12 months

23

Reference ID 3213422

Table 5 Proportion of Patients with an ACR Response Percent of Patients

Monotherapy in Nonbiologic or Biologic DMARD Inadequate

Respondersc

MTX Inadequate Respondersd TNF Inhibitor Inadequate Responderse

Study I Study IV Study V

Na PBO

122

XELJANZ 5 mg Twice

Daily

243

XELJANZ 10 mg Twice Daily

245

PBO + MTX

160

XELJANZ 5 mg Twice

Daily + MTX

321

XELJANZ 10 mg Twice

Daily + MTX

316

PBO +

MTX

132

XELJANZ 5 mg Twice

Daily + MTX

133

XELJANZ 10 mg Twice

Daily + MTX

134 ACR20 Month 3 Month 6

26 NAb

59 69

65 70

27 25

55 50

67 62

24 NA

41 51

48 54

ACR50 Month 3 Month 6

12 NA

31 42

36 46

8 9

29 32

37 44

8 NA

26 37

28 30

ACR70 Month 3 Month 6

6 NA

15 22

20 29

3 1

11 14

17 23

2 NA

14 16

10 16

a N is number of randomized and treated patients b NA Not applicable as data for placebo treatment is not available beyond 3 months in Studies I and V due to placebo advancement c Inadequate response to at least one DMARD (biologic or nonbiologic) due to lack of efficacy or toxicity d Inadequate response to MTX defined as the presence of sufficient residual disease activity to meet the entry criteria e Inadequate response to a least one TNF inhibitor due to lack of efficacy andor intolerance

In Study IV a greater proportion of patients treated with XELJANZ 5 mg or 10 mg twice daily plus MTX achieved a low level of disease activity as measured by a DAS28-4(ESR) less than 26 at 6 months compared to those treated with MTX alone (Table 6)

24

Reference ID 3213422

Table 6 Proportion of Patients with DAS28-4(ESR) Less Than 26 with Number of Residual Active Joints Study IV DAS28-4(ESR) Less Than 26 Placebo + MTX

160

XELJANZ 5 mg Twice Daily + MTX

321

XELJANZ 10 mg Twice Daily + MTX

316 Proportion of responders at Month 6 (n) 1 (2) 6 (19) 13 (42)

Of responders proportion with 0 active joints (n)

50 (1) 42 (8) 36 (15)

Of responders proportion with 1 active joint (n) 0 5 (1) 17 (7) Of responders proportion with 2 active joints (n)

0 32 (6) 7 (3)

Of responders proportion with 3 or more active joints (n)

50 (1) 21 (4) 40 (17)

The results of the components of the ACR response criteria for Study IV are shown in Table 7 Similar results were observed in Studies I II III and V

Table 7 Components of ACR Response at 3 Months Study IV

XELJANZ

5 mg

Twice Daily + MTX

N=321

XELJANZ

10 mg

Twice Daily + MTX

N=316

Placebo + MTX

N=160

Component (mean) a Baseline Month 3a Baseline Month 3a Baseline Month 3a

Number of tender

joints 24 13 23 10 23 18

(0-68) (14) (14) (15) (12) (13) (14)

Number of swollen

joints 14 6 14 6 14 10

(0-66) (8) (8) (8) (7) (9) (9)

Painb 58

(23)

34

(23)

58

(24)

29

(22)

55

(24)

47

(24)

Patient global

assessmentb

58

(24)

35

(23)

57

(23)

29

(20)

54

(23)

47

(24)

Disability index

(HAQ-DI)c 141 099 140 084 132 119

(068) (065) (066) (064) (067) (068)

25

Reference ID 3213422

Physician global

assessmentb 59 30 58 24 56 43

(16) (19) (17) (17) (18) (22)

CRP (mgL) 153 71 171 44 137 146

(190) (191) (269) (86) (149) (187) aData shown is mean (Standard Deviation) at Month 3bVisual analog scale 0 = best 100 = worst cHealth Assessment Questionnaire Disability Index 0 = best 3 = worst 20 questions categories dressing and grooming arising eating walking hygiene reach grip and activities

The percent of ACR20 responders by visit for Study IV is shown in Figure 5 Similar responses were observed in Studies I II III and V

Figure 5 Percentage of ACR20 Responders by Visit for Study IV

Physical Function Response Improvement in physical functioning was measured by the HAQ-DI Patients receiving XELJANZ 5 and 10 mg twice daily demonstrated greater improvement from baseline in physical functioning compared to placebo at Month 3

The mean (95 CI) difference from placebo in HAQ-DI improvement from baseline at Month 3 in Study III was -022 (-035 -010) in patients receiving 5 mg XELJANZ twice daily and -032 (-044 -019) in patients receiving 10 mg XELJANZ twice daily Similar results were obtained in

26

Reference ID 3213422

Studies I II IV and V In the 12-month trials HAQ-DI results in XELJANZ-treated patients were consistent at 6 and 12 months

16 HOW SUPPLIEDSTORAGE AND HANDLING XELJANZ is provided as 5 mg tofacitinib (equivalent to 8 mg tofacitinib citrate) tablets White round immediate-release film-coated tablets debossed with ldquoPfizerrdquo on one side and ldquoJKI 5rdquo on the other side and available in

Bottles of 60 NDC 0069-1001-01 Bottles of 180 NDC 0069-1001-02

Storage and Handling Store at 20degC to 25degC (68degF to 77degF) [See USP Controlled Room Temperature]

Do not repackage

17 PATIENT COUNSELING INFORMATION See FDA-approved patient labeling (Medication Guide)

Inform patients of the availability of a Medication Guide and instruct them to read the Medication Guide prior to taking XELJANZ Instruct patients to take XELJANZ only as prescribed

This productrsquos label may have been updated For current full prescribing information please visit wwwpfizercom

LAB-0445-10

27

Reference ID 3213422

MEDICATION GUIDE

XELJANZ (ZELrsquo JANSrsquo) (tofacitinib)

Read this Medication Guide before you start taking XELJANZ and each time you get a refill There may be new information This Medication Guide does not take the place of talking to your healthcare provider about your medical condition or treatment

What is the most important information I should know about XELJANZ XELJANZ may cause serious side effects including

1 Serious infections

XELJANZ is a medicine that affects your immune system XELJANZ can lower the ability of your immune system to fight infections Some people have serious infections while taking XELJANZ including tuberculosis (TB) and infections caused by bacteria fungi or viruses that can spread throughout the body Some people have died from these infections Your healthcare provider should test you for TB before starting XELJANZ Your healthcare provider should monitor you closely for signs and symptoms of

TB infection during treatment with XELJANZ

You should not start taking XELJANZ if you have any kind of infection unless your healthcare provider tells you it is okay

Before starting XELJANZ tell your healthcare provider if you think you have an infection or have symptoms of an infection such as

o fever sweating or chills o warm red or painful skin o muscle aches or sores on your body o cough o diarrhea or stomach pain o shortness of breath o burning when you urinate o blood in phlegm or urinating more often o weight loss than normal

o feeling very tired are being treated for an infection get a lot of infections or have infections that keep coming back have diabetes HIV or a weak immune system People with these conditions

have a higher chance for infections have TB or have been in close contact with someone with TB live or have lived or have traveled to certain parts of the country (such as the

Ohio and Mississippi River valleys and the Southwest) where there is an increased chance for getting certain kinds of fungal infections (histoplasmosis coccidioidomycosis or blastomycosis) These infections may happen or become more severe if you use XELJANZ Ask your healthcare provider if you do not know if you have lived in an area where these infections are common

have or have had hepatitis B or C

28

Reference ID 3213422

After starting XELJANZ call your healthcare provider right away if you have any symptoms of an infection XELJANZ can make you more likely to get infections or make worse any infection that you have

2 Cancer and immune system problems

XELJANZ may increase your risk of certain cancers by changing the way your immune system works

Lymphoma and other cancers can happen in patients taking XELJANZ Tell your healthcare provider if you have ever had any type of cancer

Some people who have taken XELJANZ with certain other medicines to prevent kidney transplant rejection have had a problem with certain white blood cells growing out of control (Epstein Barr Virus-associated post transplant lymphoproliferative disorder)

3 Tears (perforation) in the stomach or intestines

Tell your healthcare provider if you have had diverticulitis (inflammation in parts of the large intestine) or ulcers in your stomach or intestines Some people taking XELJANZ get tears in their stomach or intestine This happens most often in people who also take nonsteroidal anti-inflammatory drugs (NSAIDs) corticosteroids or methotrexate

Tell your healthcare provider right away if you have fever and stomach-area pain that does not go away and a change in your bowel habits

4 Changes in certain laboratory test results Your healthcare provider should do blood tests before you start receiving XELJANZ and while you take XELJANZ to check for the following side effects

changes in lymphocyte counts Lymphocytes are white blood cells that help the body fight off infections

low neutrophil counts Neutrophils are white blood cells that help the body fight off infections

low red blood cell count This may mean that you have anemia which may make you feel weak and tired

Your healthcare provider should routinely check certain liver tests

You should not receive XELJANZ if your lymphocyte count neutrophil count or red blood cell count is too low or your liver tests are too high

Your healthcare provider may stop your XELJANZ treatment for a period of time if needed because of changes in these blood test results

29

Reference ID 3213422

You may also have changes in other laboratory tests such as your blood cholesterol levels Your healthcare provider should do blood tests to check your cholesterol levels 4 to 8 weeks after you start receiving XELJANZ and as needed after that Normal cholesterol levels are important to good heart health

See ldquoWhat are the possible side effects of XELJANZrdquo for more information about side effects

What is XELJANZ

XELJANZ is a prescription medicine called a Janus kinase (JAK) inhibitor XELJANZ is used to treat adults with moderately to severely active rheumatoid arthritis in which methotrexate did not work well

It is not known if XELJANZ is safe and effective in people with Hepatitis B or C

XELJANZ is not for people with severe liver problems

It is not known if XELJANZ is safe and effective in children

What should I tell my healthcare provider before taking XELJANZ

XELJANZ may not be right for you Before taking XELJANZ tell your healthcare provider if you have an infection See ldquoWhat is the most important information I should know

about XELJANZrdquo have liver problems have kidney problems have any stomach area (abdominal) pain or been diagnosed with diverticulitis or

ulcers in your stomach or intestines have had a reaction to tofacitinib or any of the ingredients in XELJANZ have recently received or are scheduled to receive a vaccine People who take

XELJANZ should not receive live vaccines People taking XELJANZ can receive non-live vaccines

have any other medical conditions plan to become pregnant or are pregnant It is not known if XELJANZ will harm

an unborn baby

Pregnancy Registry Pfizer has a registry for pregnant women who take XELJANZ The purpose of this registry is to check the health of the pregnant mother and her baby If you are pregnant or become pregnant while taking XELJANZ talk to your healthcare provider about how you can join this pregnancy registry or you may contact the registry at 1-877-311-8972 to enroll

plan to breastfeed or are breastfeeding You and your healthcare provider should decide if you will take XELJANZ or breastfeed You should not do both

30

Reference ID 3213422

Tell your healthcare provider about all the medicines you take including prescription and non-prescription medicines vitamins and herbal supplements XELJANZ and other medicines may affect each other causing side effects

Especially tell your healthcare provider if you take any other medicines to treat your rheumatoid arthritis You should not take

tocilizumab (Actemrareg) etanercept (Enbrelreg) adalimumab (Humirareg) infliximab (Remicadereg) rituximab (Rituxanreg) abatacept (Orenciareg) anakinra (Kineretreg) certolizumab (Cimziareg) golimumab (Simponireg) azathioprine cyclosporine or other immunosuppressive drugs while you are taking XELJANZ Taking XELJANZ with these medicines may increase your risk of infection

medicines that affect the way certain liver enzymes work Ask your healthcare provider if you are not sure if your medicine is one of these

Know the medicines you take Keep a list of them to show your healthcare provider and pharmacist when you get a new medicine

How should I take XELJANZ

Take XELJANZ as your healthcare provider tells you to take it

Take XELJANZ 2 times a day with or without food

If you take too much XELJANZ call your healthcare provider or go the nearest hospital emergency room right away

What are possible side effects of XELJANZ

XELJANZ may cause serious side effects including

See ldquoWhat is the most important information I should know about XELJANZrdquo

Hepatitis B or C activation infection in people who carry the virus in their blood If you are a carrier of the hepatitis B or C virus (viruses that affect the liver) the virus may become active while you use XELJANZ Your healthcare provider may do blood tests before you start treatment with XELJANZ and while you are using XELJANZ Tell your healthcare provider if you have any of the following symptoms of a possible hepatitis B or C infection

o feel very tired o fevers o skin or eyes look yellow o chills o little or no appetite o stomach discomfort o vomiting o muscle aches o clay-colored bowel o dark urine

movements o skin rash

31

Reference ID 3213422

Common side effects of XELJANZ include upper respiratory tract infections (common cold sinus infections) headache diarrhea nasal congestion sore throat and runny nose (nasopharyngitis)

Tell your healthcare provider if you have any side effect that bothers you or that does not go away

These are not all the possible side effects of XELJANZ For more information ask your healthcare provider or pharmacist

Call your doctor for medical advice about side effects You may report side effects to FDA at 1-800-FDA-1088

You may also report side effects to Pfizer at 1-800-438-1985

How should I store XELJANZ

Store XELJANZ at 68degF to 77degF (room temperature)

Safely throw away medicine that is out of date or no longer needed

Keep XELJANZ and all medicines out of the reach of children

General information about the safe and effective use of XELJANZ

Medicines are sometimes prescribed for purposes other than those listed in a Medication Guide Do not use XELJANZ for a condition for which it was not prescribed Do not give XELJANZ to other people even if they have the same symptoms you have It may harm them

This Medication Guide summarizes the most important information about XELJANZ If you would like more information talk to your healthcare provider You can ask your pharmacist or healthcare provider for information about XELJANZ that is written for health professionals

What are the ingredients in XELJANZ

Active ingredient tofacitinib citrate

Inactive ingredients microcrystalline cellulose lactose monohydrate croscarmellose sodium magnesium stearate HPMC 2910Hypromellose 6cP titanium dioxide macrogolPEG3350 and triacetin

32

Reference ID 3213422

This Medication Guide has been approved by the US Food and Drug Administration

LAB-0535-10 Issued November 2012

33

Reference ID 3213422

the signaling pathway at the point of JAKs preventing the phosphorylation and activation of STATs JAK enzymes transmit cytokine signaling through pairing of JAKs (eg JAK1JAK3 JAK1JAK2 JAK1TyK2 JAK2JAK2) Tofacitinib inhibited the in vitro activities of JAK1JAK2 JAK1JAK3 and JAK2JAK2 combinations with IC50 of 406 56 and 1377 nM respectively However the relevance of specific JAK combinations to therapeutic effectiveness is not known

122 Pharmacodynamics Treatment with XELJANZ was associated with dose-dependent reductions of circulating CD1656+ natural killer cells with estimated maximum reductions occurring at approximately 8shy10 weeks after initiation of therapy These changes generally resolved within 2-6 weeks after discontinuation of treatment Treatment with XELJANZ was associated with dose-dependent increases in B cell counts Changes in circulating T-lymphocyte counts and T-lymphocyte subsets (CD3+ CD4+ and CD8+) were small and inconsistent The clinical significance of these changes is unknown

Total serum IgG IgM and IgA levels after 6-month dosing in patients with rheumatoid arthritis were lower than placebo however changes were small and not dose-dependent

After treatment with XELJANZ in patients with rheumatoid arthritis rapid decreases in serum C-reactive protein (CRP) were observed and maintained throughout dosing Changes in CRP observed with XELJANZ treatment do not reverse fully within 2 weeks after discontinuation indicating a longer duration of pharmacodynamic activity compared to the pharmacokinetic half-life

123 Pharmacokinetics Following oral administration of XELJANZ peak plasma concentrations are reached within 05shy1 hour elimination half-life is ~3 hours and a dose-proportional increase in systemic exposure was observed in the therapeutic dose range Steady state concentrations are achieved in 24-48 hours with negligible accumulation after twice daily administration

Absorption The absolute oral bioavailability of tofacitinib is 74 Coadministration of XELJANZ with a high-fat meal resulted in no changes in AUC while Cmax was reduced by 32 In clinical trials XELJANZ was administered without regard to meals

Distribution After intravenous administration the volume of distribution is 87 L The protein binding of tofacitinib is ~40 Tofacitinib binds predominantly to albumin and does not appear to bind to 1-acid glycoprotein Tofacitinib distributes equally between red blood cells and plasma

Metabolism and Elimination Clearance mechanisms for tofacitinib are approximately 70 hepatic metabolism and 30 renal excretion of the parent drug The metabolism of tofacitinib is primarily mediated by CYP3A4 with minor contribution from CYP2C19 In a human radiolabeled study more than 65 of the total circulating radioactivity was accounted for by unchanged tofacitinib with the remaining

16

Reference ID 3213422

35 attributed to 8 metabolites each accounting for less than 8 of total radioactivity The pharmacologic activity of tofacitinib is attributed to the parent molecule

Pharmacokinetics in Rheumatoid Arthritis Patients Population PK analysis in rheumatoid arthritis patients indicated no clinically relevant change in tofacitinib exposure after accounting for differences in renal function (ie creatinine clearance) between patients based on age weight gender and race (Figure 1) An approximately linear relationship between body weight and volume of distribution was observed resulting in higher peak (Cmax) and lower trough (Cmin) concentrations in lighter patients However this difference is not considered to be clinically relevant The between-subject variability ( coefficient of variation) in AUC of tofacitinib is estimated to be approximately 27

Specific Populations The effect of renal and hepatic impairment and other intrinsic factors on the pharmacokinetics of tofacitinib is shown in Figure 1

17

Reference ID 3213422

Figure 1 Impact of Intrinsic Factors on Tofacitinib Pharmacokinetics

Intrinsic Factor

Weight = 40 kg

Weight = 140 kg

Age = 80 years

Female

Asian

Black

Hispanic

Renal Impairment (Mild)

Renal Impairment (Moderate)

Renal Impairment (Severe)

Hepatic Impairment (Mild)

Hepatic Impairment (Moderate)

PK

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

0

Ratio and 90 CI Recommendation

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

Reduce Dose to 5 mg Once Daily

Reduce Dose to 5 mg Once Daily

No Dose Adjustment

Reduce Dose to 5 mg Once Daily

05 1 15 2 25 3 35 4

Ratio relative to reference

Supplemental doses are not necessary in patients after dialysis

Reference values for weight age gender and race comparisons are 70 kg 55 years male and White respectively Reference groups for renal and hepatic impairment data are subjects with normal renal and hepatic function

Drug Interactions

Potential for XELJANZ to Influence the PK of Other Drugs In vitro studies indicate that tofacitinib does not significantly inhibit or induce the activity of the

18

Reference ID 3213422

major human drug-metabolizing CYPs (CYP1A2 CYP2B6 CYP2C8 CYP2C9 CYP2C19 CYP2D6 and CYP3A4) at concentrations exceeding 185 times the steady state Cmax of a 5 mg twice daily dose These in vitro results were confirmed by a human drug interaction study showing no changes in the PK of midazolam a highly sensitive CYP3A4 substrate when coadministered with XELJANZ

In rheumatoid arthritis patients the oral clearance of tofacitinib does not vary with time indicating that tofacitinib does not normalize CYP enzyme activity in rheumatoid arthritis patients Therefore coadministration with XELJANZ is not expected to result in clinically relevant increases in the metabolism of CYP substrates in rheumatoid arthritis patients

In vitro data indicate that the potential for tofacitinib to inhibit transporters such as Pshyglycoprotein organic anionic or cationic transporters at therapeutic concentrations is low

Dosing recommendations for coadministered drugs following administration with XELJANZ are shown in Figure 2

Figure 2 Impact of XELJANZ on PK of Other Drugs

Coadministered PK Drug

Methotrexate AUC

Cmax

CYP3A Substrate AUC Midazolam

Cmax

Oral ContraceptivesLevonorgestrel

AUC

Cmax

Ethinyl Estradiol AUC

Cmax

OCT amp MATE Substrate AUC Metformin

Cmax

Ratio and 90 CI Recommendation

No Dose Adjustment

No dose adjustment for CYP3A substrates such as midazolam

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

0 025 05 075 1 125 15 175 2

Ratio relative to reference

Note Reference group is administration of concomitant medication alone OCT = Organic Cationic Transporter MATE = Multidrug and Toxic Compound Extrusion

Potential for Other Drugs to Influence the PK of Tofacitinib Since tofacitinib is metabolized by CYP3A4 interaction with drugs that inhibit or induce CYP3A4 is likely Inhibitors of CYP2C19 alone or P-glycoprotein are unlikely to substantially alter the PK of tofacitinib Dosing recommendations for XELJANZ for administration with CYP inhibitors or inducers are shown in Figure 3

19

Reference ID 3213422

Figure 3 Impact of Other Drugs on PK of XELJANZ

Coadministered PK Drug

CYP3A Inhib itor AUC Ketoconazole

Cmax

CYP3A amp CYP2C19 Inhib itor AUC

Cmax Fluconazole

CYP Inducer Rifampin AUC

Cmax

Methotrexate AUC

Cmax

Tacrolimus AUC Cmax

Cyclosporine AUC

Cmax

Ratio and 90 CI Recommendation

Reduce XELJANZ Dose to 5 mg Once Daily

Reduce XELJANZ Dose to 5 mg Once Daily

May Decrease Efficacy

No Dose Adjustment

There is a risk of added immunosuppressionif XELJANZ is taken with Tacrolimus

There is a risk of added immunosuppressionif XELJANZ is taken with Cyclosporine

0 05 1 15 2 25

Ratio relative to reference

Note Reference group is administration of tofacitinib alone

13 NONCLINICAL TOXICOLOGY

131 Carcinogenesis Mutagenesis Impairment of Fertility In a 39-week toxicology study in monkeys tofacitinib at exposure levels approximately 6 times the MRHD (on an AUC basis at oral doses of 5 mgkg twice daily) produced lymphomas No lymphomas were observed in this study at exposure levels 1 times the MRHD (on an AUC basis at oral doses of 1 mgkg twice daily)

The carcinogenic potential of tofacitinib was assessed in 6-month rasH2 transgenic mouse carcinogenicity and 2-year rat carcinogenicity studies Tofacitinib at exposure levels approximately 34 times the MRHD (on an AUC basis at oral doses of 200 mgkgday) was not carcinogenic in mice

In the 24-month oral carcinogenicity study in Sprague-Dawley rats tofacitinib caused benign Leydig cell tumors hibernomas (malignancy of brown adipose tissue) and benign thymomas at doses greater than or equal to 30 mgkgday (approximately 42 times the exposure levels at the MRHD on an AUC basis) The relevance of benign Leydig cell tumors to human risk is not known

20

Reference ID 3213422

Tofacitinib was not mutagenic in the bacterial reverse mutation assay It was positive for clastogenicity in the in vitro chromosome aberration assay with human lymphocytes in the presence of metabolic enzymes but negative in the absence of metabolic enzymes Tofacitinib was negative in the in vivo rat micronucleus assay and in the in vitro CHO-HGPRT assay and the in vivo rat hepatocyte unscheduled DNA synthesis assay

In rats tofacitinib at exposure levels approximately 17 times the MRHD (on an AUC basis at oral doses of 10 mgkgday) reduced female fertility due to increased post-implantation loss There was no impairment of female rat fertility at exposure levels of tofacitinib equal to the MRHD (on an AUC basis at oral doses of 1 mgkgday) Tofacitinib exposure levels at approximately 133 times the MRHD (on an AUC basis at oral doses of 100 mgkgday) had no effect on male fertility sperm motility or sperm concentration

14 CLINICAL STUDIES The XELJANZ clinical development program included two dose-ranging trials and five confirmatory trials

DOSE-RANGING TRIALS Dose selection for XELJANZ was based on two pivotal dose-ranging trials

Dose-Ranging Study 1 was a 6-month monotherapy trial in 384 patients with active rheumatoid arthritis who had an inadequate response to a DMARD Patients who previously received adalimumab therapy were excluded Patients were randomized to 1 of 7 monotherapy treatments XELJANZ 1 3 5 10 or 15 mg twice daily adalimumab 40 mg subcutaneously every other week for 10 weeks followed by XELJANZ 5 mg twice daily for 3 months or placebo

Dose-Ranging Study 2 was a 6-month trial in which 507 patients with active rheumatoid arthritis who had an inadequate response to MTX alone received one of 6 dose regimens of XELJANZ (20 mg once daily 1 3 5 10 or 15 mg twice daily) or placebo added to background MTX

The results of XELJANZ-treated patients achieving ACR20 responses in Studies 1 and 2 are shown in Figure 4 Although a dose-response relationship was observed in Study 1 the proportion of patients with an ACR20 response did not clearly differ between the 10 mg and 15 mg doses Furthermore there was a smaller proportion of patients who responded to adalimumab monotherapy compared to those treated with XELJANZ doses 3 mg twice daily and greater In Study 2 a smaller proportion of patients achieved an ACR20 response in the placebo and XELJANZ 1 mg groups compared to patients treated with the other XELJANZ doses However there was no difference in the proportion of responders among patients treated with XELJANZ 3 5 10 15 mg twice daily or 20 mg once daily doses

21

Reference ID 3213422

Figure 4 Proportion of Patients with ACR20 Response at Month 3 in Dose-Ranging Studies 1 and 2

CONFIRMATORY TRIALS Study I was a 6-month monotherapy trial in which 610 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to a DMARD (nonbiologic or biologic) received XELJANZ 5 or 10 mg twice daily or placebo At the Month 3 visit all patients randomized to placebo treatment were advanced in a blinded fashion to a second predetermined treatment of XELJANZ 5 or 10 mg twice daily The primary endpoints at Month 3 were the proportion of patients who achieved an ACR20 response changes in Health Assessment Questionnaire ndash Disability Index (HAQ-DI) and rates of Disease Activity Score DAS28-4(ESR) less than 26

Study II was a 12-month trial in which 792 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to a nonbiologic DMARD received XELJANZ 5 or 10 mg twice daily or placebo added to background DMARD treatment (excluding potent immunosuppressive treatments such as azathioprine or cyclosporine) At the Month 3 visit nonresponding patients were advanced in a blinded fashion to a second predetermined treatment of XELJANZ 5 or 10 mg twice daily At the end of Month 6 all placebo patients were advanced to their second predetermined treatment in a blinded fashion The primary endpoints were the proportion of patients who achieved an ACR20 response at Month 6 changes in HAQ-DI at Month 3 and rates of DAS28-4(ESR) less than 26 at Month 6

Study III was a 12-month trial in 717 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to MTX Patients received XELJANZ 5 or 10 mg twice daily adalimumab 40 mg subcutaneously every other week or placebo added to background MTX

22

Reference ID 3213422

Placebo patients were advanced as in Study II The primary endpoints were the proportion of patients who achieved an ACR20 response at Month 6 HAQ-DI at Month 3 and DAS28-4(ESR) less than 26 at Month 6

Study IV is an ongoing 2-year trial with a planned analysis at 1 year in which 797 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to MTX received XELJANZ 5 or 10 mg twice daily or placebo added to background MTX Placebo patients were advanced as in Study II The primary endpoints were the proportion of patients who achieved an ACR20 response at Month 6 mean change from baseline in van der Heijde-modified total Sharp Score (mTSS) at Month 6 HAQ-DI at Month 3 and DAS28-4(ESR) less than 26 at Month 6

Study V was a 6-month trial in which 399 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to at least one approved TNF-inhibiting biologic agent received XELJANZ 5 or 10 mg twice daily or placebo added to background MTX At the Month 3 visit all patients randomized to placebo treatment were advanced in a blinded fashion to a second predetermined treatment of XELJANZ 5 or 10 mg twice daily The primary endpoints at Month 3 were the proportion of patients who achieved an ACR20 response HAQ-DI and DAS28-4(ESR) less than 26

Clinical Response The percentages of XELJANZ-treated patients achieving ACR20 ACR50 and ACR70 responses in Studies I IV and V are shown in Table 5 Similar results were observed with Studies II and III In all trials patients treated with either 5 or 10 mg twice daily XELJANZ had higher ACR20 ACR50 and ACR70 response rates versus placebo with or without background DMARD treatment at Month 3 and Month 6 Higher ACR20 response rates were observed within 2 weeks compared to placebo In the 12-month trials ACR response rates in XELJANZ-treated patients were consistent at 6 and 12 months

23

Reference ID 3213422

Table 5 Proportion of Patients with an ACR Response Percent of Patients

Monotherapy in Nonbiologic or Biologic DMARD Inadequate

Respondersc

MTX Inadequate Respondersd TNF Inhibitor Inadequate Responderse

Study I Study IV Study V

Na PBO

122

XELJANZ 5 mg Twice

Daily

243

XELJANZ 10 mg Twice Daily

245

PBO + MTX

160

XELJANZ 5 mg Twice

Daily + MTX

321

XELJANZ 10 mg Twice

Daily + MTX

316

PBO +

MTX

132

XELJANZ 5 mg Twice

Daily + MTX

133

XELJANZ 10 mg Twice

Daily + MTX

134 ACR20 Month 3 Month 6

26 NAb

59 69

65 70

27 25

55 50

67 62

24 NA

41 51

48 54

ACR50 Month 3 Month 6

12 NA

31 42

36 46

8 9

29 32

37 44

8 NA

26 37

28 30

ACR70 Month 3 Month 6

6 NA

15 22

20 29

3 1

11 14

17 23

2 NA

14 16

10 16

a N is number of randomized and treated patients b NA Not applicable as data for placebo treatment is not available beyond 3 months in Studies I and V due to placebo advancement c Inadequate response to at least one DMARD (biologic or nonbiologic) due to lack of efficacy or toxicity d Inadequate response to MTX defined as the presence of sufficient residual disease activity to meet the entry criteria e Inadequate response to a least one TNF inhibitor due to lack of efficacy andor intolerance

In Study IV a greater proportion of patients treated with XELJANZ 5 mg or 10 mg twice daily plus MTX achieved a low level of disease activity as measured by a DAS28-4(ESR) less than 26 at 6 months compared to those treated with MTX alone (Table 6)

24

Reference ID 3213422

Table 6 Proportion of Patients with DAS28-4(ESR) Less Than 26 with Number of Residual Active Joints Study IV DAS28-4(ESR) Less Than 26 Placebo + MTX

160

XELJANZ 5 mg Twice Daily + MTX

321

XELJANZ 10 mg Twice Daily + MTX

316 Proportion of responders at Month 6 (n) 1 (2) 6 (19) 13 (42)

Of responders proportion with 0 active joints (n)

50 (1) 42 (8) 36 (15)

Of responders proportion with 1 active joint (n) 0 5 (1) 17 (7) Of responders proportion with 2 active joints (n)

0 32 (6) 7 (3)

Of responders proportion with 3 or more active joints (n)

50 (1) 21 (4) 40 (17)

The results of the components of the ACR response criteria for Study IV are shown in Table 7 Similar results were observed in Studies I II III and V

Table 7 Components of ACR Response at 3 Months Study IV

XELJANZ

5 mg

Twice Daily + MTX

N=321

XELJANZ

10 mg

Twice Daily + MTX

N=316

Placebo + MTX

N=160

Component (mean) a Baseline Month 3a Baseline Month 3a Baseline Month 3a

Number of tender

joints 24 13 23 10 23 18

(0-68) (14) (14) (15) (12) (13) (14)

Number of swollen

joints 14 6 14 6 14 10

(0-66) (8) (8) (8) (7) (9) (9)

Painb 58

(23)

34

(23)

58

(24)

29

(22)

55

(24)

47

(24)

Patient global

assessmentb

58

(24)

35

(23)

57

(23)

29

(20)

54

(23)

47

(24)

Disability index

(HAQ-DI)c 141 099 140 084 132 119

(068) (065) (066) (064) (067) (068)

25

Reference ID 3213422

Physician global

assessmentb 59 30 58 24 56 43

(16) (19) (17) (17) (18) (22)

CRP (mgL) 153 71 171 44 137 146

(190) (191) (269) (86) (149) (187) aData shown is mean (Standard Deviation) at Month 3bVisual analog scale 0 = best 100 = worst cHealth Assessment Questionnaire Disability Index 0 = best 3 = worst 20 questions categories dressing and grooming arising eating walking hygiene reach grip and activities

The percent of ACR20 responders by visit for Study IV is shown in Figure 5 Similar responses were observed in Studies I II III and V

Figure 5 Percentage of ACR20 Responders by Visit for Study IV

Physical Function Response Improvement in physical functioning was measured by the HAQ-DI Patients receiving XELJANZ 5 and 10 mg twice daily demonstrated greater improvement from baseline in physical functioning compared to placebo at Month 3

The mean (95 CI) difference from placebo in HAQ-DI improvement from baseline at Month 3 in Study III was -022 (-035 -010) in patients receiving 5 mg XELJANZ twice daily and -032 (-044 -019) in patients receiving 10 mg XELJANZ twice daily Similar results were obtained in

26

Reference ID 3213422

Studies I II IV and V In the 12-month trials HAQ-DI results in XELJANZ-treated patients were consistent at 6 and 12 months

16 HOW SUPPLIEDSTORAGE AND HANDLING XELJANZ is provided as 5 mg tofacitinib (equivalent to 8 mg tofacitinib citrate) tablets White round immediate-release film-coated tablets debossed with ldquoPfizerrdquo on one side and ldquoJKI 5rdquo on the other side and available in

Bottles of 60 NDC 0069-1001-01 Bottles of 180 NDC 0069-1001-02

Storage and Handling Store at 20degC to 25degC (68degF to 77degF) [See USP Controlled Room Temperature]

Do not repackage

17 PATIENT COUNSELING INFORMATION See FDA-approved patient labeling (Medication Guide)

Inform patients of the availability of a Medication Guide and instruct them to read the Medication Guide prior to taking XELJANZ Instruct patients to take XELJANZ only as prescribed

This productrsquos label may have been updated For current full prescribing information please visit wwwpfizercom

LAB-0445-10

27

Reference ID 3213422

MEDICATION GUIDE

XELJANZ (ZELrsquo JANSrsquo) (tofacitinib)

Read this Medication Guide before you start taking XELJANZ and each time you get a refill There may be new information This Medication Guide does not take the place of talking to your healthcare provider about your medical condition or treatment

What is the most important information I should know about XELJANZ XELJANZ may cause serious side effects including

1 Serious infections

XELJANZ is a medicine that affects your immune system XELJANZ can lower the ability of your immune system to fight infections Some people have serious infections while taking XELJANZ including tuberculosis (TB) and infections caused by bacteria fungi or viruses that can spread throughout the body Some people have died from these infections Your healthcare provider should test you for TB before starting XELJANZ Your healthcare provider should monitor you closely for signs and symptoms of

TB infection during treatment with XELJANZ

You should not start taking XELJANZ if you have any kind of infection unless your healthcare provider tells you it is okay

Before starting XELJANZ tell your healthcare provider if you think you have an infection or have symptoms of an infection such as

o fever sweating or chills o warm red or painful skin o muscle aches or sores on your body o cough o diarrhea or stomach pain o shortness of breath o burning when you urinate o blood in phlegm or urinating more often o weight loss than normal

o feeling very tired are being treated for an infection get a lot of infections or have infections that keep coming back have diabetes HIV or a weak immune system People with these conditions

have a higher chance for infections have TB or have been in close contact with someone with TB live or have lived or have traveled to certain parts of the country (such as the

Ohio and Mississippi River valleys and the Southwest) where there is an increased chance for getting certain kinds of fungal infections (histoplasmosis coccidioidomycosis or blastomycosis) These infections may happen or become more severe if you use XELJANZ Ask your healthcare provider if you do not know if you have lived in an area where these infections are common

have or have had hepatitis B or C

28

Reference ID 3213422

After starting XELJANZ call your healthcare provider right away if you have any symptoms of an infection XELJANZ can make you more likely to get infections or make worse any infection that you have

2 Cancer and immune system problems

XELJANZ may increase your risk of certain cancers by changing the way your immune system works

Lymphoma and other cancers can happen in patients taking XELJANZ Tell your healthcare provider if you have ever had any type of cancer

Some people who have taken XELJANZ with certain other medicines to prevent kidney transplant rejection have had a problem with certain white blood cells growing out of control (Epstein Barr Virus-associated post transplant lymphoproliferative disorder)

3 Tears (perforation) in the stomach or intestines

Tell your healthcare provider if you have had diverticulitis (inflammation in parts of the large intestine) or ulcers in your stomach or intestines Some people taking XELJANZ get tears in their stomach or intestine This happens most often in people who also take nonsteroidal anti-inflammatory drugs (NSAIDs) corticosteroids or methotrexate

Tell your healthcare provider right away if you have fever and stomach-area pain that does not go away and a change in your bowel habits

4 Changes in certain laboratory test results Your healthcare provider should do blood tests before you start receiving XELJANZ and while you take XELJANZ to check for the following side effects

changes in lymphocyte counts Lymphocytes are white blood cells that help the body fight off infections

low neutrophil counts Neutrophils are white blood cells that help the body fight off infections

low red blood cell count This may mean that you have anemia which may make you feel weak and tired

Your healthcare provider should routinely check certain liver tests

You should not receive XELJANZ if your lymphocyte count neutrophil count or red blood cell count is too low or your liver tests are too high

Your healthcare provider may stop your XELJANZ treatment for a period of time if needed because of changes in these blood test results

29

Reference ID 3213422

You may also have changes in other laboratory tests such as your blood cholesterol levels Your healthcare provider should do blood tests to check your cholesterol levels 4 to 8 weeks after you start receiving XELJANZ and as needed after that Normal cholesterol levels are important to good heart health

See ldquoWhat are the possible side effects of XELJANZrdquo for more information about side effects

What is XELJANZ

XELJANZ is a prescription medicine called a Janus kinase (JAK) inhibitor XELJANZ is used to treat adults with moderately to severely active rheumatoid arthritis in which methotrexate did not work well

It is not known if XELJANZ is safe and effective in people with Hepatitis B or C

XELJANZ is not for people with severe liver problems

It is not known if XELJANZ is safe and effective in children

What should I tell my healthcare provider before taking XELJANZ

XELJANZ may not be right for you Before taking XELJANZ tell your healthcare provider if you have an infection See ldquoWhat is the most important information I should know

about XELJANZrdquo have liver problems have kidney problems have any stomach area (abdominal) pain or been diagnosed with diverticulitis or

ulcers in your stomach or intestines have had a reaction to tofacitinib or any of the ingredients in XELJANZ have recently received or are scheduled to receive a vaccine People who take

XELJANZ should not receive live vaccines People taking XELJANZ can receive non-live vaccines

have any other medical conditions plan to become pregnant or are pregnant It is not known if XELJANZ will harm

an unborn baby

Pregnancy Registry Pfizer has a registry for pregnant women who take XELJANZ The purpose of this registry is to check the health of the pregnant mother and her baby If you are pregnant or become pregnant while taking XELJANZ talk to your healthcare provider about how you can join this pregnancy registry or you may contact the registry at 1-877-311-8972 to enroll

plan to breastfeed or are breastfeeding You and your healthcare provider should decide if you will take XELJANZ or breastfeed You should not do both

30

Reference ID 3213422

Tell your healthcare provider about all the medicines you take including prescription and non-prescription medicines vitamins and herbal supplements XELJANZ and other medicines may affect each other causing side effects

Especially tell your healthcare provider if you take any other medicines to treat your rheumatoid arthritis You should not take

tocilizumab (Actemrareg) etanercept (Enbrelreg) adalimumab (Humirareg) infliximab (Remicadereg) rituximab (Rituxanreg) abatacept (Orenciareg) anakinra (Kineretreg) certolizumab (Cimziareg) golimumab (Simponireg) azathioprine cyclosporine or other immunosuppressive drugs while you are taking XELJANZ Taking XELJANZ with these medicines may increase your risk of infection

medicines that affect the way certain liver enzymes work Ask your healthcare provider if you are not sure if your medicine is one of these

Know the medicines you take Keep a list of them to show your healthcare provider and pharmacist when you get a new medicine

How should I take XELJANZ

Take XELJANZ as your healthcare provider tells you to take it

Take XELJANZ 2 times a day with or without food

If you take too much XELJANZ call your healthcare provider or go the nearest hospital emergency room right away

What are possible side effects of XELJANZ

XELJANZ may cause serious side effects including

See ldquoWhat is the most important information I should know about XELJANZrdquo

Hepatitis B or C activation infection in people who carry the virus in their blood If you are a carrier of the hepatitis B or C virus (viruses that affect the liver) the virus may become active while you use XELJANZ Your healthcare provider may do blood tests before you start treatment with XELJANZ and while you are using XELJANZ Tell your healthcare provider if you have any of the following symptoms of a possible hepatitis B or C infection

o feel very tired o fevers o skin or eyes look yellow o chills o little or no appetite o stomach discomfort o vomiting o muscle aches o clay-colored bowel o dark urine

movements o skin rash

31

Reference ID 3213422

Common side effects of XELJANZ include upper respiratory tract infections (common cold sinus infections) headache diarrhea nasal congestion sore throat and runny nose (nasopharyngitis)

Tell your healthcare provider if you have any side effect that bothers you or that does not go away

These are not all the possible side effects of XELJANZ For more information ask your healthcare provider or pharmacist

Call your doctor for medical advice about side effects You may report side effects to FDA at 1-800-FDA-1088

You may also report side effects to Pfizer at 1-800-438-1985

How should I store XELJANZ

Store XELJANZ at 68degF to 77degF (room temperature)

Safely throw away medicine that is out of date or no longer needed

Keep XELJANZ and all medicines out of the reach of children

General information about the safe and effective use of XELJANZ

Medicines are sometimes prescribed for purposes other than those listed in a Medication Guide Do not use XELJANZ for a condition for which it was not prescribed Do not give XELJANZ to other people even if they have the same symptoms you have It may harm them

This Medication Guide summarizes the most important information about XELJANZ If you would like more information talk to your healthcare provider You can ask your pharmacist or healthcare provider for information about XELJANZ that is written for health professionals

What are the ingredients in XELJANZ

Active ingredient tofacitinib citrate

Inactive ingredients microcrystalline cellulose lactose monohydrate croscarmellose sodium magnesium stearate HPMC 2910Hypromellose 6cP titanium dioxide macrogolPEG3350 and triacetin

32

Reference ID 3213422

This Medication Guide has been approved by the US Food and Drug Administration

LAB-0535-10 Issued November 2012

33

Reference ID 3213422

35 attributed to 8 metabolites each accounting for less than 8 of total radioactivity The pharmacologic activity of tofacitinib is attributed to the parent molecule

Pharmacokinetics in Rheumatoid Arthritis Patients Population PK analysis in rheumatoid arthritis patients indicated no clinically relevant change in tofacitinib exposure after accounting for differences in renal function (ie creatinine clearance) between patients based on age weight gender and race (Figure 1) An approximately linear relationship between body weight and volume of distribution was observed resulting in higher peak (Cmax) and lower trough (Cmin) concentrations in lighter patients However this difference is not considered to be clinically relevant The between-subject variability ( coefficient of variation) in AUC of tofacitinib is estimated to be approximately 27

Specific Populations The effect of renal and hepatic impairment and other intrinsic factors on the pharmacokinetics of tofacitinib is shown in Figure 1

17

Reference ID 3213422

Figure 1 Impact of Intrinsic Factors on Tofacitinib Pharmacokinetics

Intrinsic Factor

Weight = 40 kg

Weight = 140 kg

Age = 80 years

Female

Asian

Black

Hispanic

Renal Impairment (Mild)

Renal Impairment (Moderate)

Renal Impairment (Severe)

Hepatic Impairment (Mild)

Hepatic Impairment (Moderate)

PK

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

0

Ratio and 90 CI Recommendation

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

Reduce Dose to 5 mg Once Daily

Reduce Dose to 5 mg Once Daily

No Dose Adjustment

Reduce Dose to 5 mg Once Daily

05 1 15 2 25 3 35 4

Ratio relative to reference

Supplemental doses are not necessary in patients after dialysis

Reference values for weight age gender and race comparisons are 70 kg 55 years male and White respectively Reference groups for renal and hepatic impairment data are subjects with normal renal and hepatic function

Drug Interactions

Potential for XELJANZ to Influence the PK of Other Drugs In vitro studies indicate that tofacitinib does not significantly inhibit or induce the activity of the

18

Reference ID 3213422

major human drug-metabolizing CYPs (CYP1A2 CYP2B6 CYP2C8 CYP2C9 CYP2C19 CYP2D6 and CYP3A4) at concentrations exceeding 185 times the steady state Cmax of a 5 mg twice daily dose These in vitro results were confirmed by a human drug interaction study showing no changes in the PK of midazolam a highly sensitive CYP3A4 substrate when coadministered with XELJANZ

In rheumatoid arthritis patients the oral clearance of tofacitinib does not vary with time indicating that tofacitinib does not normalize CYP enzyme activity in rheumatoid arthritis patients Therefore coadministration with XELJANZ is not expected to result in clinically relevant increases in the metabolism of CYP substrates in rheumatoid arthritis patients

In vitro data indicate that the potential for tofacitinib to inhibit transporters such as Pshyglycoprotein organic anionic or cationic transporters at therapeutic concentrations is low

Dosing recommendations for coadministered drugs following administration with XELJANZ are shown in Figure 2

Figure 2 Impact of XELJANZ on PK of Other Drugs

Coadministered PK Drug

Methotrexate AUC

Cmax

CYP3A Substrate AUC Midazolam

Cmax

Oral ContraceptivesLevonorgestrel

AUC

Cmax

Ethinyl Estradiol AUC

Cmax

OCT amp MATE Substrate AUC Metformin

Cmax

Ratio and 90 CI Recommendation

No Dose Adjustment

No dose adjustment for CYP3A substrates such as midazolam

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

0 025 05 075 1 125 15 175 2

Ratio relative to reference

Note Reference group is administration of concomitant medication alone OCT = Organic Cationic Transporter MATE = Multidrug and Toxic Compound Extrusion

Potential for Other Drugs to Influence the PK of Tofacitinib Since tofacitinib is metabolized by CYP3A4 interaction with drugs that inhibit or induce CYP3A4 is likely Inhibitors of CYP2C19 alone or P-glycoprotein are unlikely to substantially alter the PK of tofacitinib Dosing recommendations for XELJANZ for administration with CYP inhibitors or inducers are shown in Figure 3

19

Reference ID 3213422

Figure 3 Impact of Other Drugs on PK of XELJANZ

Coadministered PK Drug

CYP3A Inhib itor AUC Ketoconazole

Cmax

CYP3A amp CYP2C19 Inhib itor AUC

Cmax Fluconazole

CYP Inducer Rifampin AUC

Cmax

Methotrexate AUC

Cmax

Tacrolimus AUC Cmax

Cyclosporine AUC

Cmax

Ratio and 90 CI Recommendation

Reduce XELJANZ Dose to 5 mg Once Daily

Reduce XELJANZ Dose to 5 mg Once Daily

May Decrease Efficacy

No Dose Adjustment

There is a risk of added immunosuppressionif XELJANZ is taken with Tacrolimus

There is a risk of added immunosuppressionif XELJANZ is taken with Cyclosporine

0 05 1 15 2 25

Ratio relative to reference

Note Reference group is administration of tofacitinib alone

13 NONCLINICAL TOXICOLOGY

131 Carcinogenesis Mutagenesis Impairment of Fertility In a 39-week toxicology study in monkeys tofacitinib at exposure levels approximately 6 times the MRHD (on an AUC basis at oral doses of 5 mgkg twice daily) produced lymphomas No lymphomas were observed in this study at exposure levels 1 times the MRHD (on an AUC basis at oral doses of 1 mgkg twice daily)

The carcinogenic potential of tofacitinib was assessed in 6-month rasH2 transgenic mouse carcinogenicity and 2-year rat carcinogenicity studies Tofacitinib at exposure levels approximately 34 times the MRHD (on an AUC basis at oral doses of 200 mgkgday) was not carcinogenic in mice

In the 24-month oral carcinogenicity study in Sprague-Dawley rats tofacitinib caused benign Leydig cell tumors hibernomas (malignancy of brown adipose tissue) and benign thymomas at doses greater than or equal to 30 mgkgday (approximately 42 times the exposure levels at the MRHD on an AUC basis) The relevance of benign Leydig cell tumors to human risk is not known

20

Reference ID 3213422

Tofacitinib was not mutagenic in the bacterial reverse mutation assay It was positive for clastogenicity in the in vitro chromosome aberration assay with human lymphocytes in the presence of metabolic enzymes but negative in the absence of metabolic enzymes Tofacitinib was negative in the in vivo rat micronucleus assay and in the in vitro CHO-HGPRT assay and the in vivo rat hepatocyte unscheduled DNA synthesis assay

In rats tofacitinib at exposure levels approximately 17 times the MRHD (on an AUC basis at oral doses of 10 mgkgday) reduced female fertility due to increased post-implantation loss There was no impairment of female rat fertility at exposure levels of tofacitinib equal to the MRHD (on an AUC basis at oral doses of 1 mgkgday) Tofacitinib exposure levels at approximately 133 times the MRHD (on an AUC basis at oral doses of 100 mgkgday) had no effect on male fertility sperm motility or sperm concentration

14 CLINICAL STUDIES The XELJANZ clinical development program included two dose-ranging trials and five confirmatory trials

DOSE-RANGING TRIALS Dose selection for XELJANZ was based on two pivotal dose-ranging trials

Dose-Ranging Study 1 was a 6-month monotherapy trial in 384 patients with active rheumatoid arthritis who had an inadequate response to a DMARD Patients who previously received adalimumab therapy were excluded Patients were randomized to 1 of 7 monotherapy treatments XELJANZ 1 3 5 10 or 15 mg twice daily adalimumab 40 mg subcutaneously every other week for 10 weeks followed by XELJANZ 5 mg twice daily for 3 months or placebo

Dose-Ranging Study 2 was a 6-month trial in which 507 patients with active rheumatoid arthritis who had an inadequate response to MTX alone received one of 6 dose regimens of XELJANZ (20 mg once daily 1 3 5 10 or 15 mg twice daily) or placebo added to background MTX

The results of XELJANZ-treated patients achieving ACR20 responses in Studies 1 and 2 are shown in Figure 4 Although a dose-response relationship was observed in Study 1 the proportion of patients with an ACR20 response did not clearly differ between the 10 mg and 15 mg doses Furthermore there was a smaller proportion of patients who responded to adalimumab monotherapy compared to those treated with XELJANZ doses 3 mg twice daily and greater In Study 2 a smaller proportion of patients achieved an ACR20 response in the placebo and XELJANZ 1 mg groups compared to patients treated with the other XELJANZ doses However there was no difference in the proportion of responders among patients treated with XELJANZ 3 5 10 15 mg twice daily or 20 mg once daily doses

21

Reference ID 3213422

Figure 4 Proportion of Patients with ACR20 Response at Month 3 in Dose-Ranging Studies 1 and 2

CONFIRMATORY TRIALS Study I was a 6-month monotherapy trial in which 610 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to a DMARD (nonbiologic or biologic) received XELJANZ 5 or 10 mg twice daily or placebo At the Month 3 visit all patients randomized to placebo treatment were advanced in a blinded fashion to a second predetermined treatment of XELJANZ 5 or 10 mg twice daily The primary endpoints at Month 3 were the proportion of patients who achieved an ACR20 response changes in Health Assessment Questionnaire ndash Disability Index (HAQ-DI) and rates of Disease Activity Score DAS28-4(ESR) less than 26

Study II was a 12-month trial in which 792 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to a nonbiologic DMARD received XELJANZ 5 or 10 mg twice daily or placebo added to background DMARD treatment (excluding potent immunosuppressive treatments such as azathioprine or cyclosporine) At the Month 3 visit nonresponding patients were advanced in a blinded fashion to a second predetermined treatment of XELJANZ 5 or 10 mg twice daily At the end of Month 6 all placebo patients were advanced to their second predetermined treatment in a blinded fashion The primary endpoints were the proportion of patients who achieved an ACR20 response at Month 6 changes in HAQ-DI at Month 3 and rates of DAS28-4(ESR) less than 26 at Month 6

Study III was a 12-month trial in 717 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to MTX Patients received XELJANZ 5 or 10 mg twice daily adalimumab 40 mg subcutaneously every other week or placebo added to background MTX

22

Reference ID 3213422

Placebo patients were advanced as in Study II The primary endpoints were the proportion of patients who achieved an ACR20 response at Month 6 HAQ-DI at Month 3 and DAS28-4(ESR) less than 26 at Month 6

Study IV is an ongoing 2-year trial with a planned analysis at 1 year in which 797 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to MTX received XELJANZ 5 or 10 mg twice daily or placebo added to background MTX Placebo patients were advanced as in Study II The primary endpoints were the proportion of patients who achieved an ACR20 response at Month 6 mean change from baseline in van der Heijde-modified total Sharp Score (mTSS) at Month 6 HAQ-DI at Month 3 and DAS28-4(ESR) less than 26 at Month 6

Study V was a 6-month trial in which 399 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to at least one approved TNF-inhibiting biologic agent received XELJANZ 5 or 10 mg twice daily or placebo added to background MTX At the Month 3 visit all patients randomized to placebo treatment were advanced in a blinded fashion to a second predetermined treatment of XELJANZ 5 or 10 mg twice daily The primary endpoints at Month 3 were the proportion of patients who achieved an ACR20 response HAQ-DI and DAS28-4(ESR) less than 26

Clinical Response The percentages of XELJANZ-treated patients achieving ACR20 ACR50 and ACR70 responses in Studies I IV and V are shown in Table 5 Similar results were observed with Studies II and III In all trials patients treated with either 5 or 10 mg twice daily XELJANZ had higher ACR20 ACR50 and ACR70 response rates versus placebo with or without background DMARD treatment at Month 3 and Month 6 Higher ACR20 response rates were observed within 2 weeks compared to placebo In the 12-month trials ACR response rates in XELJANZ-treated patients were consistent at 6 and 12 months

23

Reference ID 3213422

Table 5 Proportion of Patients with an ACR Response Percent of Patients

Monotherapy in Nonbiologic or Biologic DMARD Inadequate

Respondersc

MTX Inadequate Respondersd TNF Inhibitor Inadequate Responderse

Study I Study IV Study V

Na PBO

122

XELJANZ 5 mg Twice

Daily

243

XELJANZ 10 mg Twice Daily

245

PBO + MTX

160

XELJANZ 5 mg Twice

Daily + MTX

321

XELJANZ 10 mg Twice

Daily + MTX

316

PBO +

MTX

132

XELJANZ 5 mg Twice

Daily + MTX

133

XELJANZ 10 mg Twice

Daily + MTX

134 ACR20 Month 3 Month 6

26 NAb

59 69

65 70

27 25

55 50

67 62

24 NA

41 51

48 54

ACR50 Month 3 Month 6

12 NA

31 42

36 46

8 9

29 32

37 44

8 NA

26 37

28 30

ACR70 Month 3 Month 6

6 NA

15 22

20 29

3 1

11 14

17 23

2 NA

14 16

10 16

a N is number of randomized and treated patients b NA Not applicable as data for placebo treatment is not available beyond 3 months in Studies I and V due to placebo advancement c Inadequate response to at least one DMARD (biologic or nonbiologic) due to lack of efficacy or toxicity d Inadequate response to MTX defined as the presence of sufficient residual disease activity to meet the entry criteria e Inadequate response to a least one TNF inhibitor due to lack of efficacy andor intolerance

In Study IV a greater proportion of patients treated with XELJANZ 5 mg or 10 mg twice daily plus MTX achieved a low level of disease activity as measured by a DAS28-4(ESR) less than 26 at 6 months compared to those treated with MTX alone (Table 6)

24

Reference ID 3213422

Table 6 Proportion of Patients with DAS28-4(ESR) Less Than 26 with Number of Residual Active Joints Study IV DAS28-4(ESR) Less Than 26 Placebo + MTX

160

XELJANZ 5 mg Twice Daily + MTX

321

XELJANZ 10 mg Twice Daily + MTX

316 Proportion of responders at Month 6 (n) 1 (2) 6 (19) 13 (42)

Of responders proportion with 0 active joints (n)

50 (1) 42 (8) 36 (15)

Of responders proportion with 1 active joint (n) 0 5 (1) 17 (7) Of responders proportion with 2 active joints (n)

0 32 (6) 7 (3)

Of responders proportion with 3 or more active joints (n)

50 (1) 21 (4) 40 (17)

The results of the components of the ACR response criteria for Study IV are shown in Table 7 Similar results were observed in Studies I II III and V

Table 7 Components of ACR Response at 3 Months Study IV

XELJANZ

5 mg

Twice Daily + MTX

N=321

XELJANZ

10 mg

Twice Daily + MTX

N=316

Placebo + MTX

N=160

Component (mean) a Baseline Month 3a Baseline Month 3a Baseline Month 3a

Number of tender

joints 24 13 23 10 23 18

(0-68) (14) (14) (15) (12) (13) (14)

Number of swollen

joints 14 6 14 6 14 10

(0-66) (8) (8) (8) (7) (9) (9)

Painb 58

(23)

34

(23)

58

(24)

29

(22)

55

(24)

47

(24)

Patient global

assessmentb

58

(24)

35

(23)

57

(23)

29

(20)

54

(23)

47

(24)

Disability index

(HAQ-DI)c 141 099 140 084 132 119

(068) (065) (066) (064) (067) (068)

25

Reference ID 3213422

Physician global

assessmentb 59 30 58 24 56 43

(16) (19) (17) (17) (18) (22)

CRP (mgL) 153 71 171 44 137 146

(190) (191) (269) (86) (149) (187) aData shown is mean (Standard Deviation) at Month 3bVisual analog scale 0 = best 100 = worst cHealth Assessment Questionnaire Disability Index 0 = best 3 = worst 20 questions categories dressing and grooming arising eating walking hygiene reach grip and activities

The percent of ACR20 responders by visit for Study IV is shown in Figure 5 Similar responses were observed in Studies I II III and V

Figure 5 Percentage of ACR20 Responders by Visit for Study IV

Physical Function Response Improvement in physical functioning was measured by the HAQ-DI Patients receiving XELJANZ 5 and 10 mg twice daily demonstrated greater improvement from baseline in physical functioning compared to placebo at Month 3

The mean (95 CI) difference from placebo in HAQ-DI improvement from baseline at Month 3 in Study III was -022 (-035 -010) in patients receiving 5 mg XELJANZ twice daily and -032 (-044 -019) in patients receiving 10 mg XELJANZ twice daily Similar results were obtained in

26

Reference ID 3213422

Studies I II IV and V In the 12-month trials HAQ-DI results in XELJANZ-treated patients were consistent at 6 and 12 months

16 HOW SUPPLIEDSTORAGE AND HANDLING XELJANZ is provided as 5 mg tofacitinib (equivalent to 8 mg tofacitinib citrate) tablets White round immediate-release film-coated tablets debossed with ldquoPfizerrdquo on one side and ldquoJKI 5rdquo on the other side and available in

Bottles of 60 NDC 0069-1001-01 Bottles of 180 NDC 0069-1001-02

Storage and Handling Store at 20degC to 25degC (68degF to 77degF) [See USP Controlled Room Temperature]

Do not repackage

17 PATIENT COUNSELING INFORMATION See FDA-approved patient labeling (Medication Guide)

Inform patients of the availability of a Medication Guide and instruct them to read the Medication Guide prior to taking XELJANZ Instruct patients to take XELJANZ only as prescribed

This productrsquos label may have been updated For current full prescribing information please visit wwwpfizercom

LAB-0445-10

27

Reference ID 3213422

MEDICATION GUIDE

XELJANZ (ZELrsquo JANSrsquo) (tofacitinib)

Read this Medication Guide before you start taking XELJANZ and each time you get a refill There may be new information This Medication Guide does not take the place of talking to your healthcare provider about your medical condition or treatment

What is the most important information I should know about XELJANZ XELJANZ may cause serious side effects including

1 Serious infections

XELJANZ is a medicine that affects your immune system XELJANZ can lower the ability of your immune system to fight infections Some people have serious infections while taking XELJANZ including tuberculosis (TB) and infections caused by bacteria fungi or viruses that can spread throughout the body Some people have died from these infections Your healthcare provider should test you for TB before starting XELJANZ Your healthcare provider should monitor you closely for signs and symptoms of

TB infection during treatment with XELJANZ

You should not start taking XELJANZ if you have any kind of infection unless your healthcare provider tells you it is okay

Before starting XELJANZ tell your healthcare provider if you think you have an infection or have symptoms of an infection such as

o fever sweating or chills o warm red or painful skin o muscle aches or sores on your body o cough o diarrhea or stomach pain o shortness of breath o burning when you urinate o blood in phlegm or urinating more often o weight loss than normal

o feeling very tired are being treated for an infection get a lot of infections or have infections that keep coming back have diabetes HIV or a weak immune system People with these conditions

have a higher chance for infections have TB or have been in close contact with someone with TB live or have lived or have traveled to certain parts of the country (such as the

Ohio and Mississippi River valleys and the Southwest) where there is an increased chance for getting certain kinds of fungal infections (histoplasmosis coccidioidomycosis or blastomycosis) These infections may happen or become more severe if you use XELJANZ Ask your healthcare provider if you do not know if you have lived in an area where these infections are common

have or have had hepatitis B or C

28

Reference ID 3213422

After starting XELJANZ call your healthcare provider right away if you have any symptoms of an infection XELJANZ can make you more likely to get infections or make worse any infection that you have

2 Cancer and immune system problems

XELJANZ may increase your risk of certain cancers by changing the way your immune system works

Lymphoma and other cancers can happen in patients taking XELJANZ Tell your healthcare provider if you have ever had any type of cancer

Some people who have taken XELJANZ with certain other medicines to prevent kidney transplant rejection have had a problem with certain white blood cells growing out of control (Epstein Barr Virus-associated post transplant lymphoproliferative disorder)

3 Tears (perforation) in the stomach or intestines

Tell your healthcare provider if you have had diverticulitis (inflammation in parts of the large intestine) or ulcers in your stomach or intestines Some people taking XELJANZ get tears in their stomach or intestine This happens most often in people who also take nonsteroidal anti-inflammatory drugs (NSAIDs) corticosteroids or methotrexate

Tell your healthcare provider right away if you have fever and stomach-area pain that does not go away and a change in your bowel habits

4 Changes in certain laboratory test results Your healthcare provider should do blood tests before you start receiving XELJANZ and while you take XELJANZ to check for the following side effects

changes in lymphocyte counts Lymphocytes are white blood cells that help the body fight off infections

low neutrophil counts Neutrophils are white blood cells that help the body fight off infections

low red blood cell count This may mean that you have anemia which may make you feel weak and tired

Your healthcare provider should routinely check certain liver tests

You should not receive XELJANZ if your lymphocyte count neutrophil count or red blood cell count is too low or your liver tests are too high

Your healthcare provider may stop your XELJANZ treatment for a period of time if needed because of changes in these blood test results

29

Reference ID 3213422

You may also have changes in other laboratory tests such as your blood cholesterol levels Your healthcare provider should do blood tests to check your cholesterol levels 4 to 8 weeks after you start receiving XELJANZ and as needed after that Normal cholesterol levels are important to good heart health

See ldquoWhat are the possible side effects of XELJANZrdquo for more information about side effects

What is XELJANZ

XELJANZ is a prescription medicine called a Janus kinase (JAK) inhibitor XELJANZ is used to treat adults with moderately to severely active rheumatoid arthritis in which methotrexate did not work well

It is not known if XELJANZ is safe and effective in people with Hepatitis B or C

XELJANZ is not for people with severe liver problems

It is not known if XELJANZ is safe and effective in children

What should I tell my healthcare provider before taking XELJANZ

XELJANZ may not be right for you Before taking XELJANZ tell your healthcare provider if you have an infection See ldquoWhat is the most important information I should know

about XELJANZrdquo have liver problems have kidney problems have any stomach area (abdominal) pain or been diagnosed with diverticulitis or

ulcers in your stomach or intestines have had a reaction to tofacitinib or any of the ingredients in XELJANZ have recently received or are scheduled to receive a vaccine People who take

XELJANZ should not receive live vaccines People taking XELJANZ can receive non-live vaccines

have any other medical conditions plan to become pregnant or are pregnant It is not known if XELJANZ will harm

an unborn baby

Pregnancy Registry Pfizer has a registry for pregnant women who take XELJANZ The purpose of this registry is to check the health of the pregnant mother and her baby If you are pregnant or become pregnant while taking XELJANZ talk to your healthcare provider about how you can join this pregnancy registry or you may contact the registry at 1-877-311-8972 to enroll

plan to breastfeed or are breastfeeding You and your healthcare provider should decide if you will take XELJANZ or breastfeed You should not do both

30

Reference ID 3213422

Tell your healthcare provider about all the medicines you take including prescription and non-prescription medicines vitamins and herbal supplements XELJANZ and other medicines may affect each other causing side effects

Especially tell your healthcare provider if you take any other medicines to treat your rheumatoid arthritis You should not take

tocilizumab (Actemrareg) etanercept (Enbrelreg) adalimumab (Humirareg) infliximab (Remicadereg) rituximab (Rituxanreg) abatacept (Orenciareg) anakinra (Kineretreg) certolizumab (Cimziareg) golimumab (Simponireg) azathioprine cyclosporine or other immunosuppressive drugs while you are taking XELJANZ Taking XELJANZ with these medicines may increase your risk of infection

medicines that affect the way certain liver enzymes work Ask your healthcare provider if you are not sure if your medicine is one of these

Know the medicines you take Keep a list of them to show your healthcare provider and pharmacist when you get a new medicine

How should I take XELJANZ

Take XELJANZ as your healthcare provider tells you to take it

Take XELJANZ 2 times a day with or without food

If you take too much XELJANZ call your healthcare provider or go the nearest hospital emergency room right away

What are possible side effects of XELJANZ

XELJANZ may cause serious side effects including

See ldquoWhat is the most important information I should know about XELJANZrdquo

Hepatitis B or C activation infection in people who carry the virus in their blood If you are a carrier of the hepatitis B or C virus (viruses that affect the liver) the virus may become active while you use XELJANZ Your healthcare provider may do blood tests before you start treatment with XELJANZ and while you are using XELJANZ Tell your healthcare provider if you have any of the following symptoms of a possible hepatitis B or C infection

o feel very tired o fevers o skin or eyes look yellow o chills o little or no appetite o stomach discomfort o vomiting o muscle aches o clay-colored bowel o dark urine

movements o skin rash

31

Reference ID 3213422

Common side effects of XELJANZ include upper respiratory tract infections (common cold sinus infections) headache diarrhea nasal congestion sore throat and runny nose (nasopharyngitis)

Tell your healthcare provider if you have any side effect that bothers you or that does not go away

These are not all the possible side effects of XELJANZ For more information ask your healthcare provider or pharmacist

Call your doctor for medical advice about side effects You may report side effects to FDA at 1-800-FDA-1088

You may also report side effects to Pfizer at 1-800-438-1985

How should I store XELJANZ

Store XELJANZ at 68degF to 77degF (room temperature)

Safely throw away medicine that is out of date or no longer needed

Keep XELJANZ and all medicines out of the reach of children

General information about the safe and effective use of XELJANZ

Medicines are sometimes prescribed for purposes other than those listed in a Medication Guide Do not use XELJANZ for a condition for which it was not prescribed Do not give XELJANZ to other people even if they have the same symptoms you have It may harm them

This Medication Guide summarizes the most important information about XELJANZ If you would like more information talk to your healthcare provider You can ask your pharmacist or healthcare provider for information about XELJANZ that is written for health professionals

What are the ingredients in XELJANZ

Active ingredient tofacitinib citrate

Inactive ingredients microcrystalline cellulose lactose monohydrate croscarmellose sodium magnesium stearate HPMC 2910Hypromellose 6cP titanium dioxide macrogolPEG3350 and triacetin

32

Reference ID 3213422

This Medication Guide has been approved by the US Food and Drug Administration

LAB-0535-10 Issued November 2012

33

Reference ID 3213422

Figure 1 Impact of Intrinsic Factors on Tofacitinib Pharmacokinetics

Intrinsic Factor

Weight = 40 kg

Weight = 140 kg

Age = 80 years

Female

Asian

Black

Hispanic

Renal Impairment (Mild)

Renal Impairment (Moderate)

Renal Impairment (Severe)

Hepatic Impairment (Mild)

Hepatic Impairment (Moderate)

PK

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

AUC Cmax

0

Ratio and 90 CI Recommendation

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

Reduce Dose to 5 mg Once Daily

Reduce Dose to 5 mg Once Daily

No Dose Adjustment

Reduce Dose to 5 mg Once Daily

05 1 15 2 25 3 35 4

Ratio relative to reference

Supplemental doses are not necessary in patients after dialysis

Reference values for weight age gender and race comparisons are 70 kg 55 years male and White respectively Reference groups for renal and hepatic impairment data are subjects with normal renal and hepatic function

Drug Interactions

Potential for XELJANZ to Influence the PK of Other Drugs In vitro studies indicate that tofacitinib does not significantly inhibit or induce the activity of the

18

Reference ID 3213422

major human drug-metabolizing CYPs (CYP1A2 CYP2B6 CYP2C8 CYP2C9 CYP2C19 CYP2D6 and CYP3A4) at concentrations exceeding 185 times the steady state Cmax of a 5 mg twice daily dose These in vitro results were confirmed by a human drug interaction study showing no changes in the PK of midazolam a highly sensitive CYP3A4 substrate when coadministered with XELJANZ

In rheumatoid arthritis patients the oral clearance of tofacitinib does not vary with time indicating that tofacitinib does not normalize CYP enzyme activity in rheumatoid arthritis patients Therefore coadministration with XELJANZ is not expected to result in clinically relevant increases in the metabolism of CYP substrates in rheumatoid arthritis patients

In vitro data indicate that the potential for tofacitinib to inhibit transporters such as Pshyglycoprotein organic anionic or cationic transporters at therapeutic concentrations is low

Dosing recommendations for coadministered drugs following administration with XELJANZ are shown in Figure 2

Figure 2 Impact of XELJANZ on PK of Other Drugs

Coadministered PK Drug

Methotrexate AUC

Cmax

CYP3A Substrate AUC Midazolam

Cmax

Oral ContraceptivesLevonorgestrel

AUC

Cmax

Ethinyl Estradiol AUC

Cmax

OCT amp MATE Substrate AUC Metformin

Cmax

Ratio and 90 CI Recommendation

No Dose Adjustment

No dose adjustment for CYP3A substrates such as midazolam

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

0 025 05 075 1 125 15 175 2

Ratio relative to reference

Note Reference group is administration of concomitant medication alone OCT = Organic Cationic Transporter MATE = Multidrug and Toxic Compound Extrusion

Potential for Other Drugs to Influence the PK of Tofacitinib Since tofacitinib is metabolized by CYP3A4 interaction with drugs that inhibit or induce CYP3A4 is likely Inhibitors of CYP2C19 alone or P-glycoprotein are unlikely to substantially alter the PK of tofacitinib Dosing recommendations for XELJANZ for administration with CYP inhibitors or inducers are shown in Figure 3

19

Reference ID 3213422

Figure 3 Impact of Other Drugs on PK of XELJANZ

Coadministered PK Drug

CYP3A Inhib itor AUC Ketoconazole

Cmax

CYP3A amp CYP2C19 Inhib itor AUC

Cmax Fluconazole

CYP Inducer Rifampin AUC

Cmax

Methotrexate AUC

Cmax

Tacrolimus AUC Cmax

Cyclosporine AUC

Cmax

Ratio and 90 CI Recommendation

Reduce XELJANZ Dose to 5 mg Once Daily

Reduce XELJANZ Dose to 5 mg Once Daily

May Decrease Efficacy

No Dose Adjustment

There is a risk of added immunosuppressionif XELJANZ is taken with Tacrolimus

There is a risk of added immunosuppressionif XELJANZ is taken with Cyclosporine

0 05 1 15 2 25

Ratio relative to reference

Note Reference group is administration of tofacitinib alone

13 NONCLINICAL TOXICOLOGY

131 Carcinogenesis Mutagenesis Impairment of Fertility In a 39-week toxicology study in monkeys tofacitinib at exposure levels approximately 6 times the MRHD (on an AUC basis at oral doses of 5 mgkg twice daily) produced lymphomas No lymphomas were observed in this study at exposure levels 1 times the MRHD (on an AUC basis at oral doses of 1 mgkg twice daily)

The carcinogenic potential of tofacitinib was assessed in 6-month rasH2 transgenic mouse carcinogenicity and 2-year rat carcinogenicity studies Tofacitinib at exposure levels approximately 34 times the MRHD (on an AUC basis at oral doses of 200 mgkgday) was not carcinogenic in mice

In the 24-month oral carcinogenicity study in Sprague-Dawley rats tofacitinib caused benign Leydig cell tumors hibernomas (malignancy of brown adipose tissue) and benign thymomas at doses greater than or equal to 30 mgkgday (approximately 42 times the exposure levels at the MRHD on an AUC basis) The relevance of benign Leydig cell tumors to human risk is not known

20

Reference ID 3213422

Tofacitinib was not mutagenic in the bacterial reverse mutation assay It was positive for clastogenicity in the in vitro chromosome aberration assay with human lymphocytes in the presence of metabolic enzymes but negative in the absence of metabolic enzymes Tofacitinib was negative in the in vivo rat micronucleus assay and in the in vitro CHO-HGPRT assay and the in vivo rat hepatocyte unscheduled DNA synthesis assay

In rats tofacitinib at exposure levels approximately 17 times the MRHD (on an AUC basis at oral doses of 10 mgkgday) reduced female fertility due to increased post-implantation loss There was no impairment of female rat fertility at exposure levels of tofacitinib equal to the MRHD (on an AUC basis at oral doses of 1 mgkgday) Tofacitinib exposure levels at approximately 133 times the MRHD (on an AUC basis at oral doses of 100 mgkgday) had no effect on male fertility sperm motility or sperm concentration

14 CLINICAL STUDIES The XELJANZ clinical development program included two dose-ranging trials and five confirmatory trials

DOSE-RANGING TRIALS Dose selection for XELJANZ was based on two pivotal dose-ranging trials

Dose-Ranging Study 1 was a 6-month monotherapy trial in 384 patients with active rheumatoid arthritis who had an inadequate response to a DMARD Patients who previously received adalimumab therapy were excluded Patients were randomized to 1 of 7 monotherapy treatments XELJANZ 1 3 5 10 or 15 mg twice daily adalimumab 40 mg subcutaneously every other week for 10 weeks followed by XELJANZ 5 mg twice daily for 3 months or placebo

Dose-Ranging Study 2 was a 6-month trial in which 507 patients with active rheumatoid arthritis who had an inadequate response to MTX alone received one of 6 dose regimens of XELJANZ (20 mg once daily 1 3 5 10 or 15 mg twice daily) or placebo added to background MTX

The results of XELJANZ-treated patients achieving ACR20 responses in Studies 1 and 2 are shown in Figure 4 Although a dose-response relationship was observed in Study 1 the proportion of patients with an ACR20 response did not clearly differ between the 10 mg and 15 mg doses Furthermore there was a smaller proportion of patients who responded to adalimumab monotherapy compared to those treated with XELJANZ doses 3 mg twice daily and greater In Study 2 a smaller proportion of patients achieved an ACR20 response in the placebo and XELJANZ 1 mg groups compared to patients treated with the other XELJANZ doses However there was no difference in the proportion of responders among patients treated with XELJANZ 3 5 10 15 mg twice daily or 20 mg once daily doses

21

Reference ID 3213422

Figure 4 Proportion of Patients with ACR20 Response at Month 3 in Dose-Ranging Studies 1 and 2

CONFIRMATORY TRIALS Study I was a 6-month monotherapy trial in which 610 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to a DMARD (nonbiologic or biologic) received XELJANZ 5 or 10 mg twice daily or placebo At the Month 3 visit all patients randomized to placebo treatment were advanced in a blinded fashion to a second predetermined treatment of XELJANZ 5 or 10 mg twice daily The primary endpoints at Month 3 were the proportion of patients who achieved an ACR20 response changes in Health Assessment Questionnaire ndash Disability Index (HAQ-DI) and rates of Disease Activity Score DAS28-4(ESR) less than 26

Study II was a 12-month trial in which 792 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to a nonbiologic DMARD received XELJANZ 5 or 10 mg twice daily or placebo added to background DMARD treatment (excluding potent immunosuppressive treatments such as azathioprine or cyclosporine) At the Month 3 visit nonresponding patients were advanced in a blinded fashion to a second predetermined treatment of XELJANZ 5 or 10 mg twice daily At the end of Month 6 all placebo patients were advanced to their second predetermined treatment in a blinded fashion The primary endpoints were the proportion of patients who achieved an ACR20 response at Month 6 changes in HAQ-DI at Month 3 and rates of DAS28-4(ESR) less than 26 at Month 6

Study III was a 12-month trial in 717 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to MTX Patients received XELJANZ 5 or 10 mg twice daily adalimumab 40 mg subcutaneously every other week or placebo added to background MTX

22

Reference ID 3213422

Placebo patients were advanced as in Study II The primary endpoints were the proportion of patients who achieved an ACR20 response at Month 6 HAQ-DI at Month 3 and DAS28-4(ESR) less than 26 at Month 6

Study IV is an ongoing 2-year trial with a planned analysis at 1 year in which 797 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to MTX received XELJANZ 5 or 10 mg twice daily or placebo added to background MTX Placebo patients were advanced as in Study II The primary endpoints were the proportion of patients who achieved an ACR20 response at Month 6 mean change from baseline in van der Heijde-modified total Sharp Score (mTSS) at Month 6 HAQ-DI at Month 3 and DAS28-4(ESR) less than 26 at Month 6

Study V was a 6-month trial in which 399 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to at least one approved TNF-inhibiting biologic agent received XELJANZ 5 or 10 mg twice daily or placebo added to background MTX At the Month 3 visit all patients randomized to placebo treatment were advanced in a blinded fashion to a second predetermined treatment of XELJANZ 5 or 10 mg twice daily The primary endpoints at Month 3 were the proportion of patients who achieved an ACR20 response HAQ-DI and DAS28-4(ESR) less than 26

Clinical Response The percentages of XELJANZ-treated patients achieving ACR20 ACR50 and ACR70 responses in Studies I IV and V are shown in Table 5 Similar results were observed with Studies II and III In all trials patients treated with either 5 or 10 mg twice daily XELJANZ had higher ACR20 ACR50 and ACR70 response rates versus placebo with or without background DMARD treatment at Month 3 and Month 6 Higher ACR20 response rates were observed within 2 weeks compared to placebo In the 12-month trials ACR response rates in XELJANZ-treated patients were consistent at 6 and 12 months

23

Reference ID 3213422

Table 5 Proportion of Patients with an ACR Response Percent of Patients

Monotherapy in Nonbiologic or Biologic DMARD Inadequate

Respondersc

MTX Inadequate Respondersd TNF Inhibitor Inadequate Responderse

Study I Study IV Study V

Na PBO

122

XELJANZ 5 mg Twice

Daily

243

XELJANZ 10 mg Twice Daily

245

PBO + MTX

160

XELJANZ 5 mg Twice

Daily + MTX

321

XELJANZ 10 mg Twice

Daily + MTX

316

PBO +

MTX

132

XELJANZ 5 mg Twice

Daily + MTX

133

XELJANZ 10 mg Twice

Daily + MTX

134 ACR20 Month 3 Month 6

26 NAb

59 69

65 70

27 25

55 50

67 62

24 NA

41 51

48 54

ACR50 Month 3 Month 6

12 NA

31 42

36 46

8 9

29 32

37 44

8 NA

26 37

28 30

ACR70 Month 3 Month 6

6 NA

15 22

20 29

3 1

11 14

17 23

2 NA

14 16

10 16

a N is number of randomized and treated patients b NA Not applicable as data for placebo treatment is not available beyond 3 months in Studies I and V due to placebo advancement c Inadequate response to at least one DMARD (biologic or nonbiologic) due to lack of efficacy or toxicity d Inadequate response to MTX defined as the presence of sufficient residual disease activity to meet the entry criteria e Inadequate response to a least one TNF inhibitor due to lack of efficacy andor intolerance

In Study IV a greater proportion of patients treated with XELJANZ 5 mg or 10 mg twice daily plus MTX achieved a low level of disease activity as measured by a DAS28-4(ESR) less than 26 at 6 months compared to those treated with MTX alone (Table 6)

24

Reference ID 3213422

Table 6 Proportion of Patients with DAS28-4(ESR) Less Than 26 with Number of Residual Active Joints Study IV DAS28-4(ESR) Less Than 26 Placebo + MTX

160

XELJANZ 5 mg Twice Daily + MTX

321

XELJANZ 10 mg Twice Daily + MTX

316 Proportion of responders at Month 6 (n) 1 (2) 6 (19) 13 (42)

Of responders proportion with 0 active joints (n)

50 (1) 42 (8) 36 (15)

Of responders proportion with 1 active joint (n) 0 5 (1) 17 (7) Of responders proportion with 2 active joints (n)

0 32 (6) 7 (3)

Of responders proportion with 3 or more active joints (n)

50 (1) 21 (4) 40 (17)

The results of the components of the ACR response criteria for Study IV are shown in Table 7 Similar results were observed in Studies I II III and V

Table 7 Components of ACR Response at 3 Months Study IV

XELJANZ

5 mg

Twice Daily + MTX

N=321

XELJANZ

10 mg

Twice Daily + MTX

N=316

Placebo + MTX

N=160

Component (mean) a Baseline Month 3a Baseline Month 3a Baseline Month 3a

Number of tender

joints 24 13 23 10 23 18

(0-68) (14) (14) (15) (12) (13) (14)

Number of swollen

joints 14 6 14 6 14 10

(0-66) (8) (8) (8) (7) (9) (9)

Painb 58

(23)

34

(23)

58

(24)

29

(22)

55

(24)

47

(24)

Patient global

assessmentb

58

(24)

35

(23)

57

(23)

29

(20)

54

(23)

47

(24)

Disability index

(HAQ-DI)c 141 099 140 084 132 119

(068) (065) (066) (064) (067) (068)

25

Reference ID 3213422

Physician global

assessmentb 59 30 58 24 56 43

(16) (19) (17) (17) (18) (22)

CRP (mgL) 153 71 171 44 137 146

(190) (191) (269) (86) (149) (187) aData shown is mean (Standard Deviation) at Month 3bVisual analog scale 0 = best 100 = worst cHealth Assessment Questionnaire Disability Index 0 = best 3 = worst 20 questions categories dressing and grooming arising eating walking hygiene reach grip and activities

The percent of ACR20 responders by visit for Study IV is shown in Figure 5 Similar responses were observed in Studies I II III and V

Figure 5 Percentage of ACR20 Responders by Visit for Study IV

Physical Function Response Improvement in physical functioning was measured by the HAQ-DI Patients receiving XELJANZ 5 and 10 mg twice daily demonstrated greater improvement from baseline in physical functioning compared to placebo at Month 3

The mean (95 CI) difference from placebo in HAQ-DI improvement from baseline at Month 3 in Study III was -022 (-035 -010) in patients receiving 5 mg XELJANZ twice daily and -032 (-044 -019) in patients receiving 10 mg XELJANZ twice daily Similar results were obtained in

26

Reference ID 3213422

Studies I II IV and V In the 12-month trials HAQ-DI results in XELJANZ-treated patients were consistent at 6 and 12 months

16 HOW SUPPLIEDSTORAGE AND HANDLING XELJANZ is provided as 5 mg tofacitinib (equivalent to 8 mg tofacitinib citrate) tablets White round immediate-release film-coated tablets debossed with ldquoPfizerrdquo on one side and ldquoJKI 5rdquo on the other side and available in

Bottles of 60 NDC 0069-1001-01 Bottles of 180 NDC 0069-1001-02

Storage and Handling Store at 20degC to 25degC (68degF to 77degF) [See USP Controlled Room Temperature]

Do not repackage

17 PATIENT COUNSELING INFORMATION See FDA-approved patient labeling (Medication Guide)

Inform patients of the availability of a Medication Guide and instruct them to read the Medication Guide prior to taking XELJANZ Instruct patients to take XELJANZ only as prescribed

This productrsquos label may have been updated For current full prescribing information please visit wwwpfizercom

LAB-0445-10

27

Reference ID 3213422

MEDICATION GUIDE

XELJANZ (ZELrsquo JANSrsquo) (tofacitinib)

Read this Medication Guide before you start taking XELJANZ and each time you get a refill There may be new information This Medication Guide does not take the place of talking to your healthcare provider about your medical condition or treatment

What is the most important information I should know about XELJANZ XELJANZ may cause serious side effects including

1 Serious infections

XELJANZ is a medicine that affects your immune system XELJANZ can lower the ability of your immune system to fight infections Some people have serious infections while taking XELJANZ including tuberculosis (TB) and infections caused by bacteria fungi or viruses that can spread throughout the body Some people have died from these infections Your healthcare provider should test you for TB before starting XELJANZ Your healthcare provider should monitor you closely for signs and symptoms of

TB infection during treatment with XELJANZ

You should not start taking XELJANZ if you have any kind of infection unless your healthcare provider tells you it is okay

Before starting XELJANZ tell your healthcare provider if you think you have an infection or have symptoms of an infection such as

o fever sweating or chills o warm red or painful skin o muscle aches or sores on your body o cough o diarrhea or stomach pain o shortness of breath o burning when you urinate o blood in phlegm or urinating more often o weight loss than normal

o feeling very tired are being treated for an infection get a lot of infections or have infections that keep coming back have diabetes HIV or a weak immune system People with these conditions

have a higher chance for infections have TB or have been in close contact with someone with TB live or have lived or have traveled to certain parts of the country (such as the

Ohio and Mississippi River valleys and the Southwest) where there is an increased chance for getting certain kinds of fungal infections (histoplasmosis coccidioidomycosis or blastomycosis) These infections may happen or become more severe if you use XELJANZ Ask your healthcare provider if you do not know if you have lived in an area where these infections are common

have or have had hepatitis B or C

28

Reference ID 3213422

After starting XELJANZ call your healthcare provider right away if you have any symptoms of an infection XELJANZ can make you more likely to get infections or make worse any infection that you have

2 Cancer and immune system problems

XELJANZ may increase your risk of certain cancers by changing the way your immune system works

Lymphoma and other cancers can happen in patients taking XELJANZ Tell your healthcare provider if you have ever had any type of cancer

Some people who have taken XELJANZ with certain other medicines to prevent kidney transplant rejection have had a problem with certain white blood cells growing out of control (Epstein Barr Virus-associated post transplant lymphoproliferative disorder)

3 Tears (perforation) in the stomach or intestines

Tell your healthcare provider if you have had diverticulitis (inflammation in parts of the large intestine) or ulcers in your stomach or intestines Some people taking XELJANZ get tears in their stomach or intestine This happens most often in people who also take nonsteroidal anti-inflammatory drugs (NSAIDs) corticosteroids or methotrexate

Tell your healthcare provider right away if you have fever and stomach-area pain that does not go away and a change in your bowel habits

4 Changes in certain laboratory test results Your healthcare provider should do blood tests before you start receiving XELJANZ and while you take XELJANZ to check for the following side effects

changes in lymphocyte counts Lymphocytes are white blood cells that help the body fight off infections

low neutrophil counts Neutrophils are white blood cells that help the body fight off infections

low red blood cell count This may mean that you have anemia which may make you feel weak and tired

Your healthcare provider should routinely check certain liver tests

You should not receive XELJANZ if your lymphocyte count neutrophil count or red blood cell count is too low or your liver tests are too high

Your healthcare provider may stop your XELJANZ treatment for a period of time if needed because of changes in these blood test results

29

Reference ID 3213422

You may also have changes in other laboratory tests such as your blood cholesterol levels Your healthcare provider should do blood tests to check your cholesterol levels 4 to 8 weeks after you start receiving XELJANZ and as needed after that Normal cholesterol levels are important to good heart health

See ldquoWhat are the possible side effects of XELJANZrdquo for more information about side effects

What is XELJANZ

XELJANZ is a prescription medicine called a Janus kinase (JAK) inhibitor XELJANZ is used to treat adults with moderately to severely active rheumatoid arthritis in which methotrexate did not work well

It is not known if XELJANZ is safe and effective in people with Hepatitis B or C

XELJANZ is not for people with severe liver problems

It is not known if XELJANZ is safe and effective in children

What should I tell my healthcare provider before taking XELJANZ

XELJANZ may not be right for you Before taking XELJANZ tell your healthcare provider if you have an infection See ldquoWhat is the most important information I should know

about XELJANZrdquo have liver problems have kidney problems have any stomach area (abdominal) pain or been diagnosed with diverticulitis or

ulcers in your stomach or intestines have had a reaction to tofacitinib or any of the ingredients in XELJANZ have recently received or are scheduled to receive a vaccine People who take

XELJANZ should not receive live vaccines People taking XELJANZ can receive non-live vaccines

have any other medical conditions plan to become pregnant or are pregnant It is not known if XELJANZ will harm

an unborn baby

Pregnancy Registry Pfizer has a registry for pregnant women who take XELJANZ The purpose of this registry is to check the health of the pregnant mother and her baby If you are pregnant or become pregnant while taking XELJANZ talk to your healthcare provider about how you can join this pregnancy registry or you may contact the registry at 1-877-311-8972 to enroll

plan to breastfeed or are breastfeeding You and your healthcare provider should decide if you will take XELJANZ or breastfeed You should not do both

30

Reference ID 3213422

Tell your healthcare provider about all the medicines you take including prescription and non-prescription medicines vitamins and herbal supplements XELJANZ and other medicines may affect each other causing side effects

Especially tell your healthcare provider if you take any other medicines to treat your rheumatoid arthritis You should not take

tocilizumab (Actemrareg) etanercept (Enbrelreg) adalimumab (Humirareg) infliximab (Remicadereg) rituximab (Rituxanreg) abatacept (Orenciareg) anakinra (Kineretreg) certolizumab (Cimziareg) golimumab (Simponireg) azathioprine cyclosporine or other immunosuppressive drugs while you are taking XELJANZ Taking XELJANZ with these medicines may increase your risk of infection

medicines that affect the way certain liver enzymes work Ask your healthcare provider if you are not sure if your medicine is one of these

Know the medicines you take Keep a list of them to show your healthcare provider and pharmacist when you get a new medicine

How should I take XELJANZ

Take XELJANZ as your healthcare provider tells you to take it

Take XELJANZ 2 times a day with or without food

If you take too much XELJANZ call your healthcare provider or go the nearest hospital emergency room right away

What are possible side effects of XELJANZ

XELJANZ may cause serious side effects including

See ldquoWhat is the most important information I should know about XELJANZrdquo

Hepatitis B or C activation infection in people who carry the virus in their blood If you are a carrier of the hepatitis B or C virus (viruses that affect the liver) the virus may become active while you use XELJANZ Your healthcare provider may do blood tests before you start treatment with XELJANZ and while you are using XELJANZ Tell your healthcare provider if you have any of the following symptoms of a possible hepatitis B or C infection

o feel very tired o fevers o skin or eyes look yellow o chills o little or no appetite o stomach discomfort o vomiting o muscle aches o clay-colored bowel o dark urine

movements o skin rash

31

Reference ID 3213422

Common side effects of XELJANZ include upper respiratory tract infections (common cold sinus infections) headache diarrhea nasal congestion sore throat and runny nose (nasopharyngitis)

Tell your healthcare provider if you have any side effect that bothers you or that does not go away

These are not all the possible side effects of XELJANZ For more information ask your healthcare provider or pharmacist

Call your doctor for medical advice about side effects You may report side effects to FDA at 1-800-FDA-1088

You may also report side effects to Pfizer at 1-800-438-1985

How should I store XELJANZ

Store XELJANZ at 68degF to 77degF (room temperature)

Safely throw away medicine that is out of date or no longer needed

Keep XELJANZ and all medicines out of the reach of children

General information about the safe and effective use of XELJANZ

Medicines are sometimes prescribed for purposes other than those listed in a Medication Guide Do not use XELJANZ for a condition for which it was not prescribed Do not give XELJANZ to other people even if they have the same symptoms you have It may harm them

This Medication Guide summarizes the most important information about XELJANZ If you would like more information talk to your healthcare provider You can ask your pharmacist or healthcare provider for information about XELJANZ that is written for health professionals

What are the ingredients in XELJANZ

Active ingredient tofacitinib citrate

Inactive ingredients microcrystalline cellulose lactose monohydrate croscarmellose sodium magnesium stearate HPMC 2910Hypromellose 6cP titanium dioxide macrogolPEG3350 and triacetin

32

Reference ID 3213422

This Medication Guide has been approved by the US Food and Drug Administration

LAB-0535-10 Issued November 2012

33

Reference ID 3213422

major human drug-metabolizing CYPs (CYP1A2 CYP2B6 CYP2C8 CYP2C9 CYP2C19 CYP2D6 and CYP3A4) at concentrations exceeding 185 times the steady state Cmax of a 5 mg twice daily dose These in vitro results were confirmed by a human drug interaction study showing no changes in the PK of midazolam a highly sensitive CYP3A4 substrate when coadministered with XELJANZ

In rheumatoid arthritis patients the oral clearance of tofacitinib does not vary with time indicating that tofacitinib does not normalize CYP enzyme activity in rheumatoid arthritis patients Therefore coadministration with XELJANZ is not expected to result in clinically relevant increases in the metabolism of CYP substrates in rheumatoid arthritis patients

In vitro data indicate that the potential for tofacitinib to inhibit transporters such as Pshyglycoprotein organic anionic or cationic transporters at therapeutic concentrations is low

Dosing recommendations for coadministered drugs following administration with XELJANZ are shown in Figure 2

Figure 2 Impact of XELJANZ on PK of Other Drugs

Coadministered PK Drug

Methotrexate AUC

Cmax

CYP3A Substrate AUC Midazolam

Cmax

Oral ContraceptivesLevonorgestrel

AUC

Cmax

Ethinyl Estradiol AUC

Cmax

OCT amp MATE Substrate AUC Metformin

Cmax

Ratio and 90 CI Recommendation

No Dose Adjustment

No dose adjustment for CYP3A substrates such as midazolam

No Dose Adjustment

No Dose Adjustment

No Dose Adjustment

0 025 05 075 1 125 15 175 2

Ratio relative to reference

Note Reference group is administration of concomitant medication alone OCT = Organic Cationic Transporter MATE = Multidrug and Toxic Compound Extrusion

Potential for Other Drugs to Influence the PK of Tofacitinib Since tofacitinib is metabolized by CYP3A4 interaction with drugs that inhibit or induce CYP3A4 is likely Inhibitors of CYP2C19 alone or P-glycoprotein are unlikely to substantially alter the PK of tofacitinib Dosing recommendations for XELJANZ for administration with CYP inhibitors or inducers are shown in Figure 3

19

Reference ID 3213422

Figure 3 Impact of Other Drugs on PK of XELJANZ

Coadministered PK Drug

CYP3A Inhib itor AUC Ketoconazole

Cmax

CYP3A amp CYP2C19 Inhib itor AUC

Cmax Fluconazole

CYP Inducer Rifampin AUC

Cmax

Methotrexate AUC

Cmax

Tacrolimus AUC Cmax

Cyclosporine AUC

Cmax

Ratio and 90 CI Recommendation

Reduce XELJANZ Dose to 5 mg Once Daily

Reduce XELJANZ Dose to 5 mg Once Daily

May Decrease Efficacy

No Dose Adjustment

There is a risk of added immunosuppressionif XELJANZ is taken with Tacrolimus

There is a risk of added immunosuppressionif XELJANZ is taken with Cyclosporine

0 05 1 15 2 25

Ratio relative to reference

Note Reference group is administration of tofacitinib alone

13 NONCLINICAL TOXICOLOGY

131 Carcinogenesis Mutagenesis Impairment of Fertility In a 39-week toxicology study in monkeys tofacitinib at exposure levels approximately 6 times the MRHD (on an AUC basis at oral doses of 5 mgkg twice daily) produced lymphomas No lymphomas were observed in this study at exposure levels 1 times the MRHD (on an AUC basis at oral doses of 1 mgkg twice daily)

The carcinogenic potential of tofacitinib was assessed in 6-month rasH2 transgenic mouse carcinogenicity and 2-year rat carcinogenicity studies Tofacitinib at exposure levels approximately 34 times the MRHD (on an AUC basis at oral doses of 200 mgkgday) was not carcinogenic in mice

In the 24-month oral carcinogenicity study in Sprague-Dawley rats tofacitinib caused benign Leydig cell tumors hibernomas (malignancy of brown adipose tissue) and benign thymomas at doses greater than or equal to 30 mgkgday (approximately 42 times the exposure levels at the MRHD on an AUC basis) The relevance of benign Leydig cell tumors to human risk is not known

20

Reference ID 3213422

Tofacitinib was not mutagenic in the bacterial reverse mutation assay It was positive for clastogenicity in the in vitro chromosome aberration assay with human lymphocytes in the presence of metabolic enzymes but negative in the absence of metabolic enzymes Tofacitinib was negative in the in vivo rat micronucleus assay and in the in vitro CHO-HGPRT assay and the in vivo rat hepatocyte unscheduled DNA synthesis assay

In rats tofacitinib at exposure levels approximately 17 times the MRHD (on an AUC basis at oral doses of 10 mgkgday) reduced female fertility due to increased post-implantation loss There was no impairment of female rat fertility at exposure levels of tofacitinib equal to the MRHD (on an AUC basis at oral doses of 1 mgkgday) Tofacitinib exposure levels at approximately 133 times the MRHD (on an AUC basis at oral doses of 100 mgkgday) had no effect on male fertility sperm motility or sperm concentration

14 CLINICAL STUDIES The XELJANZ clinical development program included two dose-ranging trials and five confirmatory trials

DOSE-RANGING TRIALS Dose selection for XELJANZ was based on two pivotal dose-ranging trials

Dose-Ranging Study 1 was a 6-month monotherapy trial in 384 patients with active rheumatoid arthritis who had an inadequate response to a DMARD Patients who previously received adalimumab therapy were excluded Patients were randomized to 1 of 7 monotherapy treatments XELJANZ 1 3 5 10 or 15 mg twice daily adalimumab 40 mg subcutaneously every other week for 10 weeks followed by XELJANZ 5 mg twice daily for 3 months or placebo

Dose-Ranging Study 2 was a 6-month trial in which 507 patients with active rheumatoid arthritis who had an inadequate response to MTX alone received one of 6 dose regimens of XELJANZ (20 mg once daily 1 3 5 10 or 15 mg twice daily) or placebo added to background MTX

The results of XELJANZ-treated patients achieving ACR20 responses in Studies 1 and 2 are shown in Figure 4 Although a dose-response relationship was observed in Study 1 the proportion of patients with an ACR20 response did not clearly differ between the 10 mg and 15 mg doses Furthermore there was a smaller proportion of patients who responded to adalimumab monotherapy compared to those treated with XELJANZ doses 3 mg twice daily and greater In Study 2 a smaller proportion of patients achieved an ACR20 response in the placebo and XELJANZ 1 mg groups compared to patients treated with the other XELJANZ doses However there was no difference in the proportion of responders among patients treated with XELJANZ 3 5 10 15 mg twice daily or 20 mg once daily doses

21

Reference ID 3213422

Figure 4 Proportion of Patients with ACR20 Response at Month 3 in Dose-Ranging Studies 1 and 2

CONFIRMATORY TRIALS Study I was a 6-month monotherapy trial in which 610 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to a DMARD (nonbiologic or biologic) received XELJANZ 5 or 10 mg twice daily or placebo At the Month 3 visit all patients randomized to placebo treatment were advanced in a blinded fashion to a second predetermined treatment of XELJANZ 5 or 10 mg twice daily The primary endpoints at Month 3 were the proportion of patients who achieved an ACR20 response changes in Health Assessment Questionnaire ndash Disability Index (HAQ-DI) and rates of Disease Activity Score DAS28-4(ESR) less than 26

Study II was a 12-month trial in which 792 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to a nonbiologic DMARD received XELJANZ 5 or 10 mg twice daily or placebo added to background DMARD treatment (excluding potent immunosuppressive treatments such as azathioprine or cyclosporine) At the Month 3 visit nonresponding patients were advanced in a blinded fashion to a second predetermined treatment of XELJANZ 5 or 10 mg twice daily At the end of Month 6 all placebo patients were advanced to their second predetermined treatment in a blinded fashion The primary endpoints were the proportion of patients who achieved an ACR20 response at Month 6 changes in HAQ-DI at Month 3 and rates of DAS28-4(ESR) less than 26 at Month 6

Study III was a 12-month trial in 717 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to MTX Patients received XELJANZ 5 or 10 mg twice daily adalimumab 40 mg subcutaneously every other week or placebo added to background MTX

22

Reference ID 3213422

Placebo patients were advanced as in Study II The primary endpoints were the proportion of patients who achieved an ACR20 response at Month 6 HAQ-DI at Month 3 and DAS28-4(ESR) less than 26 at Month 6

Study IV is an ongoing 2-year trial with a planned analysis at 1 year in which 797 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to MTX received XELJANZ 5 or 10 mg twice daily or placebo added to background MTX Placebo patients were advanced as in Study II The primary endpoints were the proportion of patients who achieved an ACR20 response at Month 6 mean change from baseline in van der Heijde-modified total Sharp Score (mTSS) at Month 6 HAQ-DI at Month 3 and DAS28-4(ESR) less than 26 at Month 6

Study V was a 6-month trial in which 399 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to at least one approved TNF-inhibiting biologic agent received XELJANZ 5 or 10 mg twice daily or placebo added to background MTX At the Month 3 visit all patients randomized to placebo treatment were advanced in a blinded fashion to a second predetermined treatment of XELJANZ 5 or 10 mg twice daily The primary endpoints at Month 3 were the proportion of patients who achieved an ACR20 response HAQ-DI and DAS28-4(ESR) less than 26

Clinical Response The percentages of XELJANZ-treated patients achieving ACR20 ACR50 and ACR70 responses in Studies I IV and V are shown in Table 5 Similar results were observed with Studies II and III In all trials patients treated with either 5 or 10 mg twice daily XELJANZ had higher ACR20 ACR50 and ACR70 response rates versus placebo with or without background DMARD treatment at Month 3 and Month 6 Higher ACR20 response rates were observed within 2 weeks compared to placebo In the 12-month trials ACR response rates in XELJANZ-treated patients were consistent at 6 and 12 months

23

Reference ID 3213422

Table 5 Proportion of Patients with an ACR Response Percent of Patients

Monotherapy in Nonbiologic or Biologic DMARD Inadequate

Respondersc

MTX Inadequate Respondersd TNF Inhibitor Inadequate Responderse

Study I Study IV Study V

Na PBO

122

XELJANZ 5 mg Twice

Daily

243

XELJANZ 10 mg Twice Daily

245

PBO + MTX

160

XELJANZ 5 mg Twice

Daily + MTX

321

XELJANZ 10 mg Twice

Daily + MTX

316

PBO +

MTX

132

XELJANZ 5 mg Twice

Daily + MTX

133

XELJANZ 10 mg Twice

Daily + MTX

134 ACR20 Month 3 Month 6

26 NAb

59 69

65 70

27 25

55 50

67 62

24 NA

41 51

48 54

ACR50 Month 3 Month 6

12 NA

31 42

36 46

8 9

29 32

37 44

8 NA

26 37

28 30

ACR70 Month 3 Month 6

6 NA

15 22

20 29

3 1

11 14

17 23

2 NA

14 16

10 16

a N is number of randomized and treated patients b NA Not applicable as data for placebo treatment is not available beyond 3 months in Studies I and V due to placebo advancement c Inadequate response to at least one DMARD (biologic or nonbiologic) due to lack of efficacy or toxicity d Inadequate response to MTX defined as the presence of sufficient residual disease activity to meet the entry criteria e Inadequate response to a least one TNF inhibitor due to lack of efficacy andor intolerance

In Study IV a greater proportion of patients treated with XELJANZ 5 mg or 10 mg twice daily plus MTX achieved a low level of disease activity as measured by a DAS28-4(ESR) less than 26 at 6 months compared to those treated with MTX alone (Table 6)

24

Reference ID 3213422

Table 6 Proportion of Patients with DAS28-4(ESR) Less Than 26 with Number of Residual Active Joints Study IV DAS28-4(ESR) Less Than 26 Placebo + MTX

160

XELJANZ 5 mg Twice Daily + MTX

321

XELJANZ 10 mg Twice Daily + MTX

316 Proportion of responders at Month 6 (n) 1 (2) 6 (19) 13 (42)

Of responders proportion with 0 active joints (n)

50 (1) 42 (8) 36 (15)

Of responders proportion with 1 active joint (n) 0 5 (1) 17 (7) Of responders proportion with 2 active joints (n)

0 32 (6) 7 (3)

Of responders proportion with 3 or more active joints (n)

50 (1) 21 (4) 40 (17)

The results of the components of the ACR response criteria for Study IV are shown in Table 7 Similar results were observed in Studies I II III and V

Table 7 Components of ACR Response at 3 Months Study IV

XELJANZ

5 mg

Twice Daily + MTX

N=321

XELJANZ

10 mg

Twice Daily + MTX

N=316

Placebo + MTX

N=160

Component (mean) a Baseline Month 3a Baseline Month 3a Baseline Month 3a

Number of tender

joints 24 13 23 10 23 18

(0-68) (14) (14) (15) (12) (13) (14)

Number of swollen

joints 14 6 14 6 14 10

(0-66) (8) (8) (8) (7) (9) (9)

Painb 58

(23)

34

(23)

58

(24)

29

(22)

55

(24)

47

(24)

Patient global

assessmentb

58

(24)

35

(23)

57

(23)

29

(20)

54

(23)

47

(24)

Disability index

(HAQ-DI)c 141 099 140 084 132 119

(068) (065) (066) (064) (067) (068)

25

Reference ID 3213422

Physician global

assessmentb 59 30 58 24 56 43

(16) (19) (17) (17) (18) (22)

CRP (mgL) 153 71 171 44 137 146

(190) (191) (269) (86) (149) (187) aData shown is mean (Standard Deviation) at Month 3bVisual analog scale 0 = best 100 = worst cHealth Assessment Questionnaire Disability Index 0 = best 3 = worst 20 questions categories dressing and grooming arising eating walking hygiene reach grip and activities

The percent of ACR20 responders by visit for Study IV is shown in Figure 5 Similar responses were observed in Studies I II III and V

Figure 5 Percentage of ACR20 Responders by Visit for Study IV

Physical Function Response Improvement in physical functioning was measured by the HAQ-DI Patients receiving XELJANZ 5 and 10 mg twice daily demonstrated greater improvement from baseline in physical functioning compared to placebo at Month 3

The mean (95 CI) difference from placebo in HAQ-DI improvement from baseline at Month 3 in Study III was -022 (-035 -010) in patients receiving 5 mg XELJANZ twice daily and -032 (-044 -019) in patients receiving 10 mg XELJANZ twice daily Similar results were obtained in

26

Reference ID 3213422

Studies I II IV and V In the 12-month trials HAQ-DI results in XELJANZ-treated patients were consistent at 6 and 12 months

16 HOW SUPPLIEDSTORAGE AND HANDLING XELJANZ is provided as 5 mg tofacitinib (equivalent to 8 mg tofacitinib citrate) tablets White round immediate-release film-coated tablets debossed with ldquoPfizerrdquo on one side and ldquoJKI 5rdquo on the other side and available in

Bottles of 60 NDC 0069-1001-01 Bottles of 180 NDC 0069-1001-02

Storage and Handling Store at 20degC to 25degC (68degF to 77degF) [See USP Controlled Room Temperature]

Do not repackage

17 PATIENT COUNSELING INFORMATION See FDA-approved patient labeling (Medication Guide)

Inform patients of the availability of a Medication Guide and instruct them to read the Medication Guide prior to taking XELJANZ Instruct patients to take XELJANZ only as prescribed

This productrsquos label may have been updated For current full prescribing information please visit wwwpfizercom

LAB-0445-10

27

Reference ID 3213422

MEDICATION GUIDE

XELJANZ (ZELrsquo JANSrsquo) (tofacitinib)

Read this Medication Guide before you start taking XELJANZ and each time you get a refill There may be new information This Medication Guide does not take the place of talking to your healthcare provider about your medical condition or treatment

What is the most important information I should know about XELJANZ XELJANZ may cause serious side effects including

1 Serious infections

XELJANZ is a medicine that affects your immune system XELJANZ can lower the ability of your immune system to fight infections Some people have serious infections while taking XELJANZ including tuberculosis (TB) and infections caused by bacteria fungi or viruses that can spread throughout the body Some people have died from these infections Your healthcare provider should test you for TB before starting XELJANZ Your healthcare provider should monitor you closely for signs and symptoms of

TB infection during treatment with XELJANZ

You should not start taking XELJANZ if you have any kind of infection unless your healthcare provider tells you it is okay

Before starting XELJANZ tell your healthcare provider if you think you have an infection or have symptoms of an infection such as

o fever sweating or chills o warm red or painful skin o muscle aches or sores on your body o cough o diarrhea or stomach pain o shortness of breath o burning when you urinate o blood in phlegm or urinating more often o weight loss than normal

o feeling very tired are being treated for an infection get a lot of infections or have infections that keep coming back have diabetes HIV or a weak immune system People with these conditions

have a higher chance for infections have TB or have been in close contact with someone with TB live or have lived or have traveled to certain parts of the country (such as the

Ohio and Mississippi River valleys and the Southwest) where there is an increased chance for getting certain kinds of fungal infections (histoplasmosis coccidioidomycosis or blastomycosis) These infections may happen or become more severe if you use XELJANZ Ask your healthcare provider if you do not know if you have lived in an area where these infections are common

have or have had hepatitis B or C

28

Reference ID 3213422

After starting XELJANZ call your healthcare provider right away if you have any symptoms of an infection XELJANZ can make you more likely to get infections or make worse any infection that you have

2 Cancer and immune system problems

XELJANZ may increase your risk of certain cancers by changing the way your immune system works

Lymphoma and other cancers can happen in patients taking XELJANZ Tell your healthcare provider if you have ever had any type of cancer

Some people who have taken XELJANZ with certain other medicines to prevent kidney transplant rejection have had a problem with certain white blood cells growing out of control (Epstein Barr Virus-associated post transplant lymphoproliferative disorder)

3 Tears (perforation) in the stomach or intestines

Tell your healthcare provider if you have had diverticulitis (inflammation in parts of the large intestine) or ulcers in your stomach or intestines Some people taking XELJANZ get tears in their stomach or intestine This happens most often in people who also take nonsteroidal anti-inflammatory drugs (NSAIDs) corticosteroids or methotrexate

Tell your healthcare provider right away if you have fever and stomach-area pain that does not go away and a change in your bowel habits

4 Changes in certain laboratory test results Your healthcare provider should do blood tests before you start receiving XELJANZ and while you take XELJANZ to check for the following side effects

changes in lymphocyte counts Lymphocytes are white blood cells that help the body fight off infections

low neutrophil counts Neutrophils are white blood cells that help the body fight off infections

low red blood cell count This may mean that you have anemia which may make you feel weak and tired

Your healthcare provider should routinely check certain liver tests

You should not receive XELJANZ if your lymphocyte count neutrophil count or red blood cell count is too low or your liver tests are too high

Your healthcare provider may stop your XELJANZ treatment for a period of time if needed because of changes in these blood test results

29

Reference ID 3213422

You may also have changes in other laboratory tests such as your blood cholesterol levels Your healthcare provider should do blood tests to check your cholesterol levels 4 to 8 weeks after you start receiving XELJANZ and as needed after that Normal cholesterol levels are important to good heart health

See ldquoWhat are the possible side effects of XELJANZrdquo for more information about side effects

What is XELJANZ

XELJANZ is a prescription medicine called a Janus kinase (JAK) inhibitor XELJANZ is used to treat adults with moderately to severely active rheumatoid arthritis in which methotrexate did not work well

It is not known if XELJANZ is safe and effective in people with Hepatitis B or C

XELJANZ is not for people with severe liver problems

It is not known if XELJANZ is safe and effective in children

What should I tell my healthcare provider before taking XELJANZ

XELJANZ may not be right for you Before taking XELJANZ tell your healthcare provider if you have an infection See ldquoWhat is the most important information I should know

about XELJANZrdquo have liver problems have kidney problems have any stomach area (abdominal) pain or been diagnosed with diverticulitis or

ulcers in your stomach or intestines have had a reaction to tofacitinib or any of the ingredients in XELJANZ have recently received or are scheduled to receive a vaccine People who take

XELJANZ should not receive live vaccines People taking XELJANZ can receive non-live vaccines

have any other medical conditions plan to become pregnant or are pregnant It is not known if XELJANZ will harm

an unborn baby

Pregnancy Registry Pfizer has a registry for pregnant women who take XELJANZ The purpose of this registry is to check the health of the pregnant mother and her baby If you are pregnant or become pregnant while taking XELJANZ talk to your healthcare provider about how you can join this pregnancy registry or you may contact the registry at 1-877-311-8972 to enroll

plan to breastfeed or are breastfeeding You and your healthcare provider should decide if you will take XELJANZ or breastfeed You should not do both

30

Reference ID 3213422

Tell your healthcare provider about all the medicines you take including prescription and non-prescription medicines vitamins and herbal supplements XELJANZ and other medicines may affect each other causing side effects

Especially tell your healthcare provider if you take any other medicines to treat your rheumatoid arthritis You should not take

tocilizumab (Actemrareg) etanercept (Enbrelreg) adalimumab (Humirareg) infliximab (Remicadereg) rituximab (Rituxanreg) abatacept (Orenciareg) anakinra (Kineretreg) certolizumab (Cimziareg) golimumab (Simponireg) azathioprine cyclosporine or other immunosuppressive drugs while you are taking XELJANZ Taking XELJANZ with these medicines may increase your risk of infection

medicines that affect the way certain liver enzymes work Ask your healthcare provider if you are not sure if your medicine is one of these

Know the medicines you take Keep a list of them to show your healthcare provider and pharmacist when you get a new medicine

How should I take XELJANZ

Take XELJANZ as your healthcare provider tells you to take it

Take XELJANZ 2 times a day with or without food

If you take too much XELJANZ call your healthcare provider or go the nearest hospital emergency room right away

What are possible side effects of XELJANZ

XELJANZ may cause serious side effects including

See ldquoWhat is the most important information I should know about XELJANZrdquo

Hepatitis B or C activation infection in people who carry the virus in their blood If you are a carrier of the hepatitis B or C virus (viruses that affect the liver) the virus may become active while you use XELJANZ Your healthcare provider may do blood tests before you start treatment with XELJANZ and while you are using XELJANZ Tell your healthcare provider if you have any of the following symptoms of a possible hepatitis B or C infection

o feel very tired o fevers o skin or eyes look yellow o chills o little or no appetite o stomach discomfort o vomiting o muscle aches o clay-colored bowel o dark urine

movements o skin rash

31

Reference ID 3213422

Common side effects of XELJANZ include upper respiratory tract infections (common cold sinus infections) headache diarrhea nasal congestion sore throat and runny nose (nasopharyngitis)

Tell your healthcare provider if you have any side effect that bothers you or that does not go away

These are not all the possible side effects of XELJANZ For more information ask your healthcare provider or pharmacist

Call your doctor for medical advice about side effects You may report side effects to FDA at 1-800-FDA-1088

You may also report side effects to Pfizer at 1-800-438-1985

How should I store XELJANZ

Store XELJANZ at 68degF to 77degF (room temperature)

Safely throw away medicine that is out of date or no longer needed

Keep XELJANZ and all medicines out of the reach of children

General information about the safe and effective use of XELJANZ

Medicines are sometimes prescribed for purposes other than those listed in a Medication Guide Do not use XELJANZ for a condition for which it was not prescribed Do not give XELJANZ to other people even if they have the same symptoms you have It may harm them

This Medication Guide summarizes the most important information about XELJANZ If you would like more information talk to your healthcare provider You can ask your pharmacist or healthcare provider for information about XELJANZ that is written for health professionals

What are the ingredients in XELJANZ

Active ingredient tofacitinib citrate

Inactive ingredients microcrystalline cellulose lactose monohydrate croscarmellose sodium magnesium stearate HPMC 2910Hypromellose 6cP titanium dioxide macrogolPEG3350 and triacetin

32

Reference ID 3213422

This Medication Guide has been approved by the US Food and Drug Administration

LAB-0535-10 Issued November 2012

33

Reference ID 3213422

Figure 3 Impact of Other Drugs on PK of XELJANZ

Coadministered PK Drug

CYP3A Inhib itor AUC Ketoconazole

Cmax

CYP3A amp CYP2C19 Inhib itor AUC

Cmax Fluconazole

CYP Inducer Rifampin AUC

Cmax

Methotrexate AUC

Cmax

Tacrolimus AUC Cmax

Cyclosporine AUC

Cmax

Ratio and 90 CI Recommendation

Reduce XELJANZ Dose to 5 mg Once Daily

Reduce XELJANZ Dose to 5 mg Once Daily

May Decrease Efficacy

No Dose Adjustment

There is a risk of added immunosuppressionif XELJANZ is taken with Tacrolimus

There is a risk of added immunosuppressionif XELJANZ is taken with Cyclosporine

0 05 1 15 2 25

Ratio relative to reference

Note Reference group is administration of tofacitinib alone

13 NONCLINICAL TOXICOLOGY

131 Carcinogenesis Mutagenesis Impairment of Fertility In a 39-week toxicology study in monkeys tofacitinib at exposure levels approximately 6 times the MRHD (on an AUC basis at oral doses of 5 mgkg twice daily) produced lymphomas No lymphomas were observed in this study at exposure levels 1 times the MRHD (on an AUC basis at oral doses of 1 mgkg twice daily)

The carcinogenic potential of tofacitinib was assessed in 6-month rasH2 transgenic mouse carcinogenicity and 2-year rat carcinogenicity studies Tofacitinib at exposure levels approximately 34 times the MRHD (on an AUC basis at oral doses of 200 mgkgday) was not carcinogenic in mice

In the 24-month oral carcinogenicity study in Sprague-Dawley rats tofacitinib caused benign Leydig cell tumors hibernomas (malignancy of brown adipose tissue) and benign thymomas at doses greater than or equal to 30 mgkgday (approximately 42 times the exposure levels at the MRHD on an AUC basis) The relevance of benign Leydig cell tumors to human risk is not known

20

Reference ID 3213422

Tofacitinib was not mutagenic in the bacterial reverse mutation assay It was positive for clastogenicity in the in vitro chromosome aberration assay with human lymphocytes in the presence of metabolic enzymes but negative in the absence of metabolic enzymes Tofacitinib was negative in the in vivo rat micronucleus assay and in the in vitro CHO-HGPRT assay and the in vivo rat hepatocyte unscheduled DNA synthesis assay

In rats tofacitinib at exposure levels approximately 17 times the MRHD (on an AUC basis at oral doses of 10 mgkgday) reduced female fertility due to increased post-implantation loss There was no impairment of female rat fertility at exposure levels of tofacitinib equal to the MRHD (on an AUC basis at oral doses of 1 mgkgday) Tofacitinib exposure levels at approximately 133 times the MRHD (on an AUC basis at oral doses of 100 mgkgday) had no effect on male fertility sperm motility or sperm concentration

14 CLINICAL STUDIES The XELJANZ clinical development program included two dose-ranging trials and five confirmatory trials

DOSE-RANGING TRIALS Dose selection for XELJANZ was based on two pivotal dose-ranging trials

Dose-Ranging Study 1 was a 6-month monotherapy trial in 384 patients with active rheumatoid arthritis who had an inadequate response to a DMARD Patients who previously received adalimumab therapy were excluded Patients were randomized to 1 of 7 monotherapy treatments XELJANZ 1 3 5 10 or 15 mg twice daily adalimumab 40 mg subcutaneously every other week for 10 weeks followed by XELJANZ 5 mg twice daily for 3 months or placebo

Dose-Ranging Study 2 was a 6-month trial in which 507 patients with active rheumatoid arthritis who had an inadequate response to MTX alone received one of 6 dose regimens of XELJANZ (20 mg once daily 1 3 5 10 or 15 mg twice daily) or placebo added to background MTX

The results of XELJANZ-treated patients achieving ACR20 responses in Studies 1 and 2 are shown in Figure 4 Although a dose-response relationship was observed in Study 1 the proportion of patients with an ACR20 response did not clearly differ between the 10 mg and 15 mg doses Furthermore there was a smaller proportion of patients who responded to adalimumab monotherapy compared to those treated with XELJANZ doses 3 mg twice daily and greater In Study 2 a smaller proportion of patients achieved an ACR20 response in the placebo and XELJANZ 1 mg groups compared to patients treated with the other XELJANZ doses However there was no difference in the proportion of responders among patients treated with XELJANZ 3 5 10 15 mg twice daily or 20 mg once daily doses

21

Reference ID 3213422

Figure 4 Proportion of Patients with ACR20 Response at Month 3 in Dose-Ranging Studies 1 and 2

CONFIRMATORY TRIALS Study I was a 6-month monotherapy trial in which 610 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to a DMARD (nonbiologic or biologic) received XELJANZ 5 or 10 mg twice daily or placebo At the Month 3 visit all patients randomized to placebo treatment were advanced in a blinded fashion to a second predetermined treatment of XELJANZ 5 or 10 mg twice daily The primary endpoints at Month 3 were the proportion of patients who achieved an ACR20 response changes in Health Assessment Questionnaire ndash Disability Index (HAQ-DI) and rates of Disease Activity Score DAS28-4(ESR) less than 26

Study II was a 12-month trial in which 792 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to a nonbiologic DMARD received XELJANZ 5 or 10 mg twice daily or placebo added to background DMARD treatment (excluding potent immunosuppressive treatments such as azathioprine or cyclosporine) At the Month 3 visit nonresponding patients were advanced in a blinded fashion to a second predetermined treatment of XELJANZ 5 or 10 mg twice daily At the end of Month 6 all placebo patients were advanced to their second predetermined treatment in a blinded fashion The primary endpoints were the proportion of patients who achieved an ACR20 response at Month 6 changes in HAQ-DI at Month 3 and rates of DAS28-4(ESR) less than 26 at Month 6

Study III was a 12-month trial in 717 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to MTX Patients received XELJANZ 5 or 10 mg twice daily adalimumab 40 mg subcutaneously every other week or placebo added to background MTX

22

Reference ID 3213422

Placebo patients were advanced as in Study II The primary endpoints were the proportion of patients who achieved an ACR20 response at Month 6 HAQ-DI at Month 3 and DAS28-4(ESR) less than 26 at Month 6

Study IV is an ongoing 2-year trial with a planned analysis at 1 year in which 797 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to MTX received XELJANZ 5 or 10 mg twice daily or placebo added to background MTX Placebo patients were advanced as in Study II The primary endpoints were the proportion of patients who achieved an ACR20 response at Month 6 mean change from baseline in van der Heijde-modified total Sharp Score (mTSS) at Month 6 HAQ-DI at Month 3 and DAS28-4(ESR) less than 26 at Month 6

Study V was a 6-month trial in which 399 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to at least one approved TNF-inhibiting biologic agent received XELJANZ 5 or 10 mg twice daily or placebo added to background MTX At the Month 3 visit all patients randomized to placebo treatment were advanced in a blinded fashion to a second predetermined treatment of XELJANZ 5 or 10 mg twice daily The primary endpoints at Month 3 were the proportion of patients who achieved an ACR20 response HAQ-DI and DAS28-4(ESR) less than 26

Clinical Response The percentages of XELJANZ-treated patients achieving ACR20 ACR50 and ACR70 responses in Studies I IV and V are shown in Table 5 Similar results were observed with Studies II and III In all trials patients treated with either 5 or 10 mg twice daily XELJANZ had higher ACR20 ACR50 and ACR70 response rates versus placebo with or without background DMARD treatment at Month 3 and Month 6 Higher ACR20 response rates were observed within 2 weeks compared to placebo In the 12-month trials ACR response rates in XELJANZ-treated patients were consistent at 6 and 12 months

23

Reference ID 3213422

Table 5 Proportion of Patients with an ACR Response Percent of Patients

Monotherapy in Nonbiologic or Biologic DMARD Inadequate

Respondersc

MTX Inadequate Respondersd TNF Inhibitor Inadequate Responderse

Study I Study IV Study V

Na PBO

122

XELJANZ 5 mg Twice

Daily

243

XELJANZ 10 mg Twice Daily

245

PBO + MTX

160

XELJANZ 5 mg Twice

Daily + MTX

321

XELJANZ 10 mg Twice

Daily + MTX

316

PBO +

MTX

132

XELJANZ 5 mg Twice

Daily + MTX

133

XELJANZ 10 mg Twice

Daily + MTX

134 ACR20 Month 3 Month 6

26 NAb

59 69

65 70

27 25

55 50

67 62

24 NA

41 51

48 54

ACR50 Month 3 Month 6

12 NA

31 42

36 46

8 9

29 32

37 44

8 NA

26 37

28 30

ACR70 Month 3 Month 6

6 NA

15 22

20 29

3 1

11 14

17 23

2 NA

14 16

10 16

a N is number of randomized and treated patients b NA Not applicable as data for placebo treatment is not available beyond 3 months in Studies I and V due to placebo advancement c Inadequate response to at least one DMARD (biologic or nonbiologic) due to lack of efficacy or toxicity d Inadequate response to MTX defined as the presence of sufficient residual disease activity to meet the entry criteria e Inadequate response to a least one TNF inhibitor due to lack of efficacy andor intolerance

In Study IV a greater proportion of patients treated with XELJANZ 5 mg or 10 mg twice daily plus MTX achieved a low level of disease activity as measured by a DAS28-4(ESR) less than 26 at 6 months compared to those treated with MTX alone (Table 6)

24

Reference ID 3213422

Table 6 Proportion of Patients with DAS28-4(ESR) Less Than 26 with Number of Residual Active Joints Study IV DAS28-4(ESR) Less Than 26 Placebo + MTX

160

XELJANZ 5 mg Twice Daily + MTX

321

XELJANZ 10 mg Twice Daily + MTX

316 Proportion of responders at Month 6 (n) 1 (2) 6 (19) 13 (42)

Of responders proportion with 0 active joints (n)

50 (1) 42 (8) 36 (15)

Of responders proportion with 1 active joint (n) 0 5 (1) 17 (7) Of responders proportion with 2 active joints (n)

0 32 (6) 7 (3)

Of responders proportion with 3 or more active joints (n)

50 (1) 21 (4) 40 (17)

The results of the components of the ACR response criteria for Study IV are shown in Table 7 Similar results were observed in Studies I II III and V

Table 7 Components of ACR Response at 3 Months Study IV

XELJANZ

5 mg

Twice Daily + MTX

N=321

XELJANZ

10 mg

Twice Daily + MTX

N=316

Placebo + MTX

N=160

Component (mean) a Baseline Month 3a Baseline Month 3a Baseline Month 3a

Number of tender

joints 24 13 23 10 23 18

(0-68) (14) (14) (15) (12) (13) (14)

Number of swollen

joints 14 6 14 6 14 10

(0-66) (8) (8) (8) (7) (9) (9)

Painb 58

(23)

34

(23)

58

(24)

29

(22)

55

(24)

47

(24)

Patient global

assessmentb

58

(24)

35

(23)

57

(23)

29

(20)

54

(23)

47

(24)

Disability index

(HAQ-DI)c 141 099 140 084 132 119

(068) (065) (066) (064) (067) (068)

25

Reference ID 3213422

Physician global

assessmentb 59 30 58 24 56 43

(16) (19) (17) (17) (18) (22)

CRP (mgL) 153 71 171 44 137 146

(190) (191) (269) (86) (149) (187) aData shown is mean (Standard Deviation) at Month 3bVisual analog scale 0 = best 100 = worst cHealth Assessment Questionnaire Disability Index 0 = best 3 = worst 20 questions categories dressing and grooming arising eating walking hygiene reach grip and activities

The percent of ACR20 responders by visit for Study IV is shown in Figure 5 Similar responses were observed in Studies I II III and V

Figure 5 Percentage of ACR20 Responders by Visit for Study IV

Physical Function Response Improvement in physical functioning was measured by the HAQ-DI Patients receiving XELJANZ 5 and 10 mg twice daily demonstrated greater improvement from baseline in physical functioning compared to placebo at Month 3

The mean (95 CI) difference from placebo in HAQ-DI improvement from baseline at Month 3 in Study III was -022 (-035 -010) in patients receiving 5 mg XELJANZ twice daily and -032 (-044 -019) in patients receiving 10 mg XELJANZ twice daily Similar results were obtained in

26

Reference ID 3213422

Studies I II IV and V In the 12-month trials HAQ-DI results in XELJANZ-treated patients were consistent at 6 and 12 months

16 HOW SUPPLIEDSTORAGE AND HANDLING XELJANZ is provided as 5 mg tofacitinib (equivalent to 8 mg tofacitinib citrate) tablets White round immediate-release film-coated tablets debossed with ldquoPfizerrdquo on one side and ldquoJKI 5rdquo on the other side and available in

Bottles of 60 NDC 0069-1001-01 Bottles of 180 NDC 0069-1001-02

Storage and Handling Store at 20degC to 25degC (68degF to 77degF) [See USP Controlled Room Temperature]

Do not repackage

17 PATIENT COUNSELING INFORMATION See FDA-approved patient labeling (Medication Guide)

Inform patients of the availability of a Medication Guide and instruct them to read the Medication Guide prior to taking XELJANZ Instruct patients to take XELJANZ only as prescribed

This productrsquos label may have been updated For current full prescribing information please visit wwwpfizercom

LAB-0445-10

27

Reference ID 3213422

MEDICATION GUIDE

XELJANZ (ZELrsquo JANSrsquo) (tofacitinib)

Read this Medication Guide before you start taking XELJANZ and each time you get a refill There may be new information This Medication Guide does not take the place of talking to your healthcare provider about your medical condition or treatment

What is the most important information I should know about XELJANZ XELJANZ may cause serious side effects including

1 Serious infections

XELJANZ is a medicine that affects your immune system XELJANZ can lower the ability of your immune system to fight infections Some people have serious infections while taking XELJANZ including tuberculosis (TB) and infections caused by bacteria fungi or viruses that can spread throughout the body Some people have died from these infections Your healthcare provider should test you for TB before starting XELJANZ Your healthcare provider should monitor you closely for signs and symptoms of

TB infection during treatment with XELJANZ

You should not start taking XELJANZ if you have any kind of infection unless your healthcare provider tells you it is okay

Before starting XELJANZ tell your healthcare provider if you think you have an infection or have symptoms of an infection such as

o fever sweating or chills o warm red or painful skin o muscle aches or sores on your body o cough o diarrhea or stomach pain o shortness of breath o burning when you urinate o blood in phlegm or urinating more often o weight loss than normal

o feeling very tired are being treated for an infection get a lot of infections or have infections that keep coming back have diabetes HIV or a weak immune system People with these conditions

have a higher chance for infections have TB or have been in close contact with someone with TB live or have lived or have traveled to certain parts of the country (such as the

Ohio and Mississippi River valleys and the Southwest) where there is an increased chance for getting certain kinds of fungal infections (histoplasmosis coccidioidomycosis or blastomycosis) These infections may happen or become more severe if you use XELJANZ Ask your healthcare provider if you do not know if you have lived in an area where these infections are common

have or have had hepatitis B or C

28

Reference ID 3213422

After starting XELJANZ call your healthcare provider right away if you have any symptoms of an infection XELJANZ can make you more likely to get infections or make worse any infection that you have

2 Cancer and immune system problems

XELJANZ may increase your risk of certain cancers by changing the way your immune system works

Lymphoma and other cancers can happen in patients taking XELJANZ Tell your healthcare provider if you have ever had any type of cancer

Some people who have taken XELJANZ with certain other medicines to prevent kidney transplant rejection have had a problem with certain white blood cells growing out of control (Epstein Barr Virus-associated post transplant lymphoproliferative disorder)

3 Tears (perforation) in the stomach or intestines

Tell your healthcare provider if you have had diverticulitis (inflammation in parts of the large intestine) or ulcers in your stomach or intestines Some people taking XELJANZ get tears in their stomach or intestine This happens most often in people who also take nonsteroidal anti-inflammatory drugs (NSAIDs) corticosteroids or methotrexate

Tell your healthcare provider right away if you have fever and stomach-area pain that does not go away and a change in your bowel habits

4 Changes in certain laboratory test results Your healthcare provider should do blood tests before you start receiving XELJANZ and while you take XELJANZ to check for the following side effects

changes in lymphocyte counts Lymphocytes are white blood cells that help the body fight off infections

low neutrophil counts Neutrophils are white blood cells that help the body fight off infections

low red blood cell count This may mean that you have anemia which may make you feel weak and tired

Your healthcare provider should routinely check certain liver tests

You should not receive XELJANZ if your lymphocyte count neutrophil count or red blood cell count is too low or your liver tests are too high

Your healthcare provider may stop your XELJANZ treatment for a period of time if needed because of changes in these blood test results

29

Reference ID 3213422

You may also have changes in other laboratory tests such as your blood cholesterol levels Your healthcare provider should do blood tests to check your cholesterol levels 4 to 8 weeks after you start receiving XELJANZ and as needed after that Normal cholesterol levels are important to good heart health

See ldquoWhat are the possible side effects of XELJANZrdquo for more information about side effects

What is XELJANZ

XELJANZ is a prescription medicine called a Janus kinase (JAK) inhibitor XELJANZ is used to treat adults with moderately to severely active rheumatoid arthritis in which methotrexate did not work well

It is not known if XELJANZ is safe and effective in people with Hepatitis B or C

XELJANZ is not for people with severe liver problems

It is not known if XELJANZ is safe and effective in children

What should I tell my healthcare provider before taking XELJANZ

XELJANZ may not be right for you Before taking XELJANZ tell your healthcare provider if you have an infection See ldquoWhat is the most important information I should know

about XELJANZrdquo have liver problems have kidney problems have any stomach area (abdominal) pain or been diagnosed with diverticulitis or

ulcers in your stomach or intestines have had a reaction to tofacitinib or any of the ingredients in XELJANZ have recently received or are scheduled to receive a vaccine People who take

XELJANZ should not receive live vaccines People taking XELJANZ can receive non-live vaccines

have any other medical conditions plan to become pregnant or are pregnant It is not known if XELJANZ will harm

an unborn baby

Pregnancy Registry Pfizer has a registry for pregnant women who take XELJANZ The purpose of this registry is to check the health of the pregnant mother and her baby If you are pregnant or become pregnant while taking XELJANZ talk to your healthcare provider about how you can join this pregnancy registry or you may contact the registry at 1-877-311-8972 to enroll

plan to breastfeed or are breastfeeding You and your healthcare provider should decide if you will take XELJANZ or breastfeed You should not do both

30

Reference ID 3213422

Tell your healthcare provider about all the medicines you take including prescription and non-prescription medicines vitamins and herbal supplements XELJANZ and other medicines may affect each other causing side effects

Especially tell your healthcare provider if you take any other medicines to treat your rheumatoid arthritis You should not take

tocilizumab (Actemrareg) etanercept (Enbrelreg) adalimumab (Humirareg) infliximab (Remicadereg) rituximab (Rituxanreg) abatacept (Orenciareg) anakinra (Kineretreg) certolizumab (Cimziareg) golimumab (Simponireg) azathioprine cyclosporine or other immunosuppressive drugs while you are taking XELJANZ Taking XELJANZ with these medicines may increase your risk of infection

medicines that affect the way certain liver enzymes work Ask your healthcare provider if you are not sure if your medicine is one of these

Know the medicines you take Keep a list of them to show your healthcare provider and pharmacist when you get a new medicine

How should I take XELJANZ

Take XELJANZ as your healthcare provider tells you to take it

Take XELJANZ 2 times a day with or without food

If you take too much XELJANZ call your healthcare provider or go the nearest hospital emergency room right away

What are possible side effects of XELJANZ

XELJANZ may cause serious side effects including

See ldquoWhat is the most important information I should know about XELJANZrdquo

Hepatitis B or C activation infection in people who carry the virus in their blood If you are a carrier of the hepatitis B or C virus (viruses that affect the liver) the virus may become active while you use XELJANZ Your healthcare provider may do blood tests before you start treatment with XELJANZ and while you are using XELJANZ Tell your healthcare provider if you have any of the following symptoms of a possible hepatitis B or C infection

o feel very tired o fevers o skin or eyes look yellow o chills o little or no appetite o stomach discomfort o vomiting o muscle aches o clay-colored bowel o dark urine

movements o skin rash

31

Reference ID 3213422

Common side effects of XELJANZ include upper respiratory tract infections (common cold sinus infections) headache diarrhea nasal congestion sore throat and runny nose (nasopharyngitis)

Tell your healthcare provider if you have any side effect that bothers you or that does not go away

These are not all the possible side effects of XELJANZ For more information ask your healthcare provider or pharmacist

Call your doctor for medical advice about side effects You may report side effects to FDA at 1-800-FDA-1088

You may also report side effects to Pfizer at 1-800-438-1985

How should I store XELJANZ

Store XELJANZ at 68degF to 77degF (room temperature)

Safely throw away medicine that is out of date or no longer needed

Keep XELJANZ and all medicines out of the reach of children

General information about the safe and effective use of XELJANZ

Medicines are sometimes prescribed for purposes other than those listed in a Medication Guide Do not use XELJANZ for a condition for which it was not prescribed Do not give XELJANZ to other people even if they have the same symptoms you have It may harm them

This Medication Guide summarizes the most important information about XELJANZ If you would like more information talk to your healthcare provider You can ask your pharmacist or healthcare provider for information about XELJANZ that is written for health professionals

What are the ingredients in XELJANZ

Active ingredient tofacitinib citrate

Inactive ingredients microcrystalline cellulose lactose monohydrate croscarmellose sodium magnesium stearate HPMC 2910Hypromellose 6cP titanium dioxide macrogolPEG3350 and triacetin

32

Reference ID 3213422

This Medication Guide has been approved by the US Food and Drug Administration

LAB-0535-10 Issued November 2012

33

Reference ID 3213422

Tofacitinib was not mutagenic in the bacterial reverse mutation assay It was positive for clastogenicity in the in vitro chromosome aberration assay with human lymphocytes in the presence of metabolic enzymes but negative in the absence of metabolic enzymes Tofacitinib was negative in the in vivo rat micronucleus assay and in the in vitro CHO-HGPRT assay and the in vivo rat hepatocyte unscheduled DNA synthesis assay

In rats tofacitinib at exposure levels approximately 17 times the MRHD (on an AUC basis at oral doses of 10 mgkgday) reduced female fertility due to increased post-implantation loss There was no impairment of female rat fertility at exposure levels of tofacitinib equal to the MRHD (on an AUC basis at oral doses of 1 mgkgday) Tofacitinib exposure levels at approximately 133 times the MRHD (on an AUC basis at oral doses of 100 mgkgday) had no effect on male fertility sperm motility or sperm concentration

14 CLINICAL STUDIES The XELJANZ clinical development program included two dose-ranging trials and five confirmatory trials

DOSE-RANGING TRIALS Dose selection for XELJANZ was based on two pivotal dose-ranging trials

Dose-Ranging Study 1 was a 6-month monotherapy trial in 384 patients with active rheumatoid arthritis who had an inadequate response to a DMARD Patients who previously received adalimumab therapy were excluded Patients were randomized to 1 of 7 monotherapy treatments XELJANZ 1 3 5 10 or 15 mg twice daily adalimumab 40 mg subcutaneously every other week for 10 weeks followed by XELJANZ 5 mg twice daily for 3 months or placebo

Dose-Ranging Study 2 was a 6-month trial in which 507 patients with active rheumatoid arthritis who had an inadequate response to MTX alone received one of 6 dose regimens of XELJANZ (20 mg once daily 1 3 5 10 or 15 mg twice daily) or placebo added to background MTX

The results of XELJANZ-treated patients achieving ACR20 responses in Studies 1 and 2 are shown in Figure 4 Although a dose-response relationship was observed in Study 1 the proportion of patients with an ACR20 response did not clearly differ between the 10 mg and 15 mg doses Furthermore there was a smaller proportion of patients who responded to adalimumab monotherapy compared to those treated with XELJANZ doses 3 mg twice daily and greater In Study 2 a smaller proportion of patients achieved an ACR20 response in the placebo and XELJANZ 1 mg groups compared to patients treated with the other XELJANZ doses However there was no difference in the proportion of responders among patients treated with XELJANZ 3 5 10 15 mg twice daily or 20 mg once daily doses

21

Reference ID 3213422

Figure 4 Proportion of Patients with ACR20 Response at Month 3 in Dose-Ranging Studies 1 and 2

CONFIRMATORY TRIALS Study I was a 6-month monotherapy trial in which 610 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to a DMARD (nonbiologic or biologic) received XELJANZ 5 or 10 mg twice daily or placebo At the Month 3 visit all patients randomized to placebo treatment were advanced in a blinded fashion to a second predetermined treatment of XELJANZ 5 or 10 mg twice daily The primary endpoints at Month 3 were the proportion of patients who achieved an ACR20 response changes in Health Assessment Questionnaire ndash Disability Index (HAQ-DI) and rates of Disease Activity Score DAS28-4(ESR) less than 26

Study II was a 12-month trial in which 792 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to a nonbiologic DMARD received XELJANZ 5 or 10 mg twice daily or placebo added to background DMARD treatment (excluding potent immunosuppressive treatments such as azathioprine or cyclosporine) At the Month 3 visit nonresponding patients were advanced in a blinded fashion to a second predetermined treatment of XELJANZ 5 or 10 mg twice daily At the end of Month 6 all placebo patients were advanced to their second predetermined treatment in a blinded fashion The primary endpoints were the proportion of patients who achieved an ACR20 response at Month 6 changes in HAQ-DI at Month 3 and rates of DAS28-4(ESR) less than 26 at Month 6

Study III was a 12-month trial in 717 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to MTX Patients received XELJANZ 5 or 10 mg twice daily adalimumab 40 mg subcutaneously every other week or placebo added to background MTX

22

Reference ID 3213422

Placebo patients were advanced as in Study II The primary endpoints were the proportion of patients who achieved an ACR20 response at Month 6 HAQ-DI at Month 3 and DAS28-4(ESR) less than 26 at Month 6

Study IV is an ongoing 2-year trial with a planned analysis at 1 year in which 797 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to MTX received XELJANZ 5 or 10 mg twice daily or placebo added to background MTX Placebo patients were advanced as in Study II The primary endpoints were the proportion of patients who achieved an ACR20 response at Month 6 mean change from baseline in van der Heijde-modified total Sharp Score (mTSS) at Month 6 HAQ-DI at Month 3 and DAS28-4(ESR) less than 26 at Month 6

Study V was a 6-month trial in which 399 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to at least one approved TNF-inhibiting biologic agent received XELJANZ 5 or 10 mg twice daily or placebo added to background MTX At the Month 3 visit all patients randomized to placebo treatment were advanced in a blinded fashion to a second predetermined treatment of XELJANZ 5 or 10 mg twice daily The primary endpoints at Month 3 were the proportion of patients who achieved an ACR20 response HAQ-DI and DAS28-4(ESR) less than 26

Clinical Response The percentages of XELJANZ-treated patients achieving ACR20 ACR50 and ACR70 responses in Studies I IV and V are shown in Table 5 Similar results were observed with Studies II and III In all trials patients treated with either 5 or 10 mg twice daily XELJANZ had higher ACR20 ACR50 and ACR70 response rates versus placebo with or without background DMARD treatment at Month 3 and Month 6 Higher ACR20 response rates were observed within 2 weeks compared to placebo In the 12-month trials ACR response rates in XELJANZ-treated patients were consistent at 6 and 12 months

23

Reference ID 3213422

Table 5 Proportion of Patients with an ACR Response Percent of Patients

Monotherapy in Nonbiologic or Biologic DMARD Inadequate

Respondersc

MTX Inadequate Respondersd TNF Inhibitor Inadequate Responderse

Study I Study IV Study V

Na PBO

122

XELJANZ 5 mg Twice

Daily

243

XELJANZ 10 mg Twice Daily

245

PBO + MTX

160

XELJANZ 5 mg Twice

Daily + MTX

321

XELJANZ 10 mg Twice

Daily + MTX

316

PBO +

MTX

132

XELJANZ 5 mg Twice

Daily + MTX

133

XELJANZ 10 mg Twice

Daily + MTX

134 ACR20 Month 3 Month 6

26 NAb

59 69

65 70

27 25

55 50

67 62

24 NA

41 51

48 54

ACR50 Month 3 Month 6

12 NA

31 42

36 46

8 9

29 32

37 44

8 NA

26 37

28 30

ACR70 Month 3 Month 6

6 NA

15 22

20 29

3 1

11 14

17 23

2 NA

14 16

10 16

a N is number of randomized and treated patients b NA Not applicable as data for placebo treatment is not available beyond 3 months in Studies I and V due to placebo advancement c Inadequate response to at least one DMARD (biologic or nonbiologic) due to lack of efficacy or toxicity d Inadequate response to MTX defined as the presence of sufficient residual disease activity to meet the entry criteria e Inadequate response to a least one TNF inhibitor due to lack of efficacy andor intolerance

In Study IV a greater proportion of patients treated with XELJANZ 5 mg or 10 mg twice daily plus MTX achieved a low level of disease activity as measured by a DAS28-4(ESR) less than 26 at 6 months compared to those treated with MTX alone (Table 6)

24

Reference ID 3213422

Table 6 Proportion of Patients with DAS28-4(ESR) Less Than 26 with Number of Residual Active Joints Study IV DAS28-4(ESR) Less Than 26 Placebo + MTX

160

XELJANZ 5 mg Twice Daily + MTX

321

XELJANZ 10 mg Twice Daily + MTX

316 Proportion of responders at Month 6 (n) 1 (2) 6 (19) 13 (42)

Of responders proportion with 0 active joints (n)

50 (1) 42 (8) 36 (15)

Of responders proportion with 1 active joint (n) 0 5 (1) 17 (7) Of responders proportion with 2 active joints (n)

0 32 (6) 7 (3)

Of responders proportion with 3 or more active joints (n)

50 (1) 21 (4) 40 (17)

The results of the components of the ACR response criteria for Study IV are shown in Table 7 Similar results were observed in Studies I II III and V

Table 7 Components of ACR Response at 3 Months Study IV

XELJANZ

5 mg

Twice Daily + MTX

N=321

XELJANZ

10 mg

Twice Daily + MTX

N=316

Placebo + MTX

N=160

Component (mean) a Baseline Month 3a Baseline Month 3a Baseline Month 3a

Number of tender

joints 24 13 23 10 23 18

(0-68) (14) (14) (15) (12) (13) (14)

Number of swollen

joints 14 6 14 6 14 10

(0-66) (8) (8) (8) (7) (9) (9)

Painb 58

(23)

34

(23)

58

(24)

29

(22)

55

(24)

47

(24)

Patient global

assessmentb

58

(24)

35

(23)

57

(23)

29

(20)

54

(23)

47

(24)

Disability index

(HAQ-DI)c 141 099 140 084 132 119

(068) (065) (066) (064) (067) (068)

25

Reference ID 3213422

Physician global

assessmentb 59 30 58 24 56 43

(16) (19) (17) (17) (18) (22)

CRP (mgL) 153 71 171 44 137 146

(190) (191) (269) (86) (149) (187) aData shown is mean (Standard Deviation) at Month 3bVisual analog scale 0 = best 100 = worst cHealth Assessment Questionnaire Disability Index 0 = best 3 = worst 20 questions categories dressing and grooming arising eating walking hygiene reach grip and activities

The percent of ACR20 responders by visit for Study IV is shown in Figure 5 Similar responses were observed in Studies I II III and V

Figure 5 Percentage of ACR20 Responders by Visit for Study IV

Physical Function Response Improvement in physical functioning was measured by the HAQ-DI Patients receiving XELJANZ 5 and 10 mg twice daily demonstrated greater improvement from baseline in physical functioning compared to placebo at Month 3

The mean (95 CI) difference from placebo in HAQ-DI improvement from baseline at Month 3 in Study III was -022 (-035 -010) in patients receiving 5 mg XELJANZ twice daily and -032 (-044 -019) in patients receiving 10 mg XELJANZ twice daily Similar results were obtained in

26

Reference ID 3213422

Studies I II IV and V In the 12-month trials HAQ-DI results in XELJANZ-treated patients were consistent at 6 and 12 months

16 HOW SUPPLIEDSTORAGE AND HANDLING XELJANZ is provided as 5 mg tofacitinib (equivalent to 8 mg tofacitinib citrate) tablets White round immediate-release film-coated tablets debossed with ldquoPfizerrdquo on one side and ldquoJKI 5rdquo on the other side and available in

Bottles of 60 NDC 0069-1001-01 Bottles of 180 NDC 0069-1001-02

Storage and Handling Store at 20degC to 25degC (68degF to 77degF) [See USP Controlled Room Temperature]

Do not repackage

17 PATIENT COUNSELING INFORMATION See FDA-approved patient labeling (Medication Guide)

Inform patients of the availability of a Medication Guide and instruct them to read the Medication Guide prior to taking XELJANZ Instruct patients to take XELJANZ only as prescribed

This productrsquos label may have been updated For current full prescribing information please visit wwwpfizercom

LAB-0445-10

27

Reference ID 3213422

MEDICATION GUIDE

XELJANZ (ZELrsquo JANSrsquo) (tofacitinib)

Read this Medication Guide before you start taking XELJANZ and each time you get a refill There may be new information This Medication Guide does not take the place of talking to your healthcare provider about your medical condition or treatment

What is the most important information I should know about XELJANZ XELJANZ may cause serious side effects including

1 Serious infections

XELJANZ is a medicine that affects your immune system XELJANZ can lower the ability of your immune system to fight infections Some people have serious infections while taking XELJANZ including tuberculosis (TB) and infections caused by bacteria fungi or viruses that can spread throughout the body Some people have died from these infections Your healthcare provider should test you for TB before starting XELJANZ Your healthcare provider should monitor you closely for signs and symptoms of

TB infection during treatment with XELJANZ

You should not start taking XELJANZ if you have any kind of infection unless your healthcare provider tells you it is okay

Before starting XELJANZ tell your healthcare provider if you think you have an infection or have symptoms of an infection such as

o fever sweating or chills o warm red or painful skin o muscle aches or sores on your body o cough o diarrhea or stomach pain o shortness of breath o burning when you urinate o blood in phlegm or urinating more often o weight loss than normal

o feeling very tired are being treated for an infection get a lot of infections or have infections that keep coming back have diabetes HIV or a weak immune system People with these conditions

have a higher chance for infections have TB or have been in close contact with someone with TB live or have lived or have traveled to certain parts of the country (such as the

Ohio and Mississippi River valleys and the Southwest) where there is an increased chance for getting certain kinds of fungal infections (histoplasmosis coccidioidomycosis or blastomycosis) These infections may happen or become more severe if you use XELJANZ Ask your healthcare provider if you do not know if you have lived in an area where these infections are common

have or have had hepatitis B or C

28

Reference ID 3213422

After starting XELJANZ call your healthcare provider right away if you have any symptoms of an infection XELJANZ can make you more likely to get infections or make worse any infection that you have

2 Cancer and immune system problems

XELJANZ may increase your risk of certain cancers by changing the way your immune system works

Lymphoma and other cancers can happen in patients taking XELJANZ Tell your healthcare provider if you have ever had any type of cancer

Some people who have taken XELJANZ with certain other medicines to prevent kidney transplant rejection have had a problem with certain white blood cells growing out of control (Epstein Barr Virus-associated post transplant lymphoproliferative disorder)

3 Tears (perforation) in the stomach or intestines

Tell your healthcare provider if you have had diverticulitis (inflammation in parts of the large intestine) or ulcers in your stomach or intestines Some people taking XELJANZ get tears in their stomach or intestine This happens most often in people who also take nonsteroidal anti-inflammatory drugs (NSAIDs) corticosteroids or methotrexate

Tell your healthcare provider right away if you have fever and stomach-area pain that does not go away and a change in your bowel habits

4 Changes in certain laboratory test results Your healthcare provider should do blood tests before you start receiving XELJANZ and while you take XELJANZ to check for the following side effects

changes in lymphocyte counts Lymphocytes are white blood cells that help the body fight off infections

low neutrophil counts Neutrophils are white blood cells that help the body fight off infections

low red blood cell count This may mean that you have anemia which may make you feel weak and tired

Your healthcare provider should routinely check certain liver tests

You should not receive XELJANZ if your lymphocyte count neutrophil count or red blood cell count is too low or your liver tests are too high

Your healthcare provider may stop your XELJANZ treatment for a period of time if needed because of changes in these blood test results

29

Reference ID 3213422

You may also have changes in other laboratory tests such as your blood cholesterol levels Your healthcare provider should do blood tests to check your cholesterol levels 4 to 8 weeks after you start receiving XELJANZ and as needed after that Normal cholesterol levels are important to good heart health

See ldquoWhat are the possible side effects of XELJANZrdquo for more information about side effects

What is XELJANZ

XELJANZ is a prescription medicine called a Janus kinase (JAK) inhibitor XELJANZ is used to treat adults with moderately to severely active rheumatoid arthritis in which methotrexate did not work well

It is not known if XELJANZ is safe and effective in people with Hepatitis B or C

XELJANZ is not for people with severe liver problems

It is not known if XELJANZ is safe and effective in children

What should I tell my healthcare provider before taking XELJANZ

XELJANZ may not be right for you Before taking XELJANZ tell your healthcare provider if you have an infection See ldquoWhat is the most important information I should know

about XELJANZrdquo have liver problems have kidney problems have any stomach area (abdominal) pain or been diagnosed with diverticulitis or

ulcers in your stomach or intestines have had a reaction to tofacitinib or any of the ingredients in XELJANZ have recently received or are scheduled to receive a vaccine People who take

XELJANZ should not receive live vaccines People taking XELJANZ can receive non-live vaccines

have any other medical conditions plan to become pregnant or are pregnant It is not known if XELJANZ will harm

an unborn baby

Pregnancy Registry Pfizer has a registry for pregnant women who take XELJANZ The purpose of this registry is to check the health of the pregnant mother and her baby If you are pregnant or become pregnant while taking XELJANZ talk to your healthcare provider about how you can join this pregnancy registry or you may contact the registry at 1-877-311-8972 to enroll

plan to breastfeed or are breastfeeding You and your healthcare provider should decide if you will take XELJANZ or breastfeed You should not do both

30

Reference ID 3213422

Tell your healthcare provider about all the medicines you take including prescription and non-prescription medicines vitamins and herbal supplements XELJANZ and other medicines may affect each other causing side effects

Especially tell your healthcare provider if you take any other medicines to treat your rheumatoid arthritis You should not take

tocilizumab (Actemrareg) etanercept (Enbrelreg) adalimumab (Humirareg) infliximab (Remicadereg) rituximab (Rituxanreg) abatacept (Orenciareg) anakinra (Kineretreg) certolizumab (Cimziareg) golimumab (Simponireg) azathioprine cyclosporine or other immunosuppressive drugs while you are taking XELJANZ Taking XELJANZ with these medicines may increase your risk of infection

medicines that affect the way certain liver enzymes work Ask your healthcare provider if you are not sure if your medicine is one of these

Know the medicines you take Keep a list of them to show your healthcare provider and pharmacist when you get a new medicine

How should I take XELJANZ

Take XELJANZ as your healthcare provider tells you to take it

Take XELJANZ 2 times a day with or without food

If you take too much XELJANZ call your healthcare provider or go the nearest hospital emergency room right away

What are possible side effects of XELJANZ

XELJANZ may cause serious side effects including

See ldquoWhat is the most important information I should know about XELJANZrdquo

Hepatitis B or C activation infection in people who carry the virus in their blood If you are a carrier of the hepatitis B or C virus (viruses that affect the liver) the virus may become active while you use XELJANZ Your healthcare provider may do blood tests before you start treatment with XELJANZ and while you are using XELJANZ Tell your healthcare provider if you have any of the following symptoms of a possible hepatitis B or C infection

o feel very tired o fevers o skin or eyes look yellow o chills o little or no appetite o stomach discomfort o vomiting o muscle aches o clay-colored bowel o dark urine

movements o skin rash

31

Reference ID 3213422

Common side effects of XELJANZ include upper respiratory tract infections (common cold sinus infections) headache diarrhea nasal congestion sore throat and runny nose (nasopharyngitis)

Tell your healthcare provider if you have any side effect that bothers you or that does not go away

These are not all the possible side effects of XELJANZ For more information ask your healthcare provider or pharmacist

Call your doctor for medical advice about side effects You may report side effects to FDA at 1-800-FDA-1088

You may also report side effects to Pfizer at 1-800-438-1985

How should I store XELJANZ

Store XELJANZ at 68degF to 77degF (room temperature)

Safely throw away medicine that is out of date or no longer needed

Keep XELJANZ and all medicines out of the reach of children

General information about the safe and effective use of XELJANZ

Medicines are sometimes prescribed for purposes other than those listed in a Medication Guide Do not use XELJANZ for a condition for which it was not prescribed Do not give XELJANZ to other people even if they have the same symptoms you have It may harm them

This Medication Guide summarizes the most important information about XELJANZ If you would like more information talk to your healthcare provider You can ask your pharmacist or healthcare provider for information about XELJANZ that is written for health professionals

What are the ingredients in XELJANZ

Active ingredient tofacitinib citrate

Inactive ingredients microcrystalline cellulose lactose monohydrate croscarmellose sodium magnesium stearate HPMC 2910Hypromellose 6cP titanium dioxide macrogolPEG3350 and triacetin

32

Reference ID 3213422

This Medication Guide has been approved by the US Food and Drug Administration

LAB-0535-10 Issued November 2012

33

Reference ID 3213422

Figure 4 Proportion of Patients with ACR20 Response at Month 3 in Dose-Ranging Studies 1 and 2

CONFIRMATORY TRIALS Study I was a 6-month monotherapy trial in which 610 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to a DMARD (nonbiologic or biologic) received XELJANZ 5 or 10 mg twice daily or placebo At the Month 3 visit all patients randomized to placebo treatment were advanced in a blinded fashion to a second predetermined treatment of XELJANZ 5 or 10 mg twice daily The primary endpoints at Month 3 were the proportion of patients who achieved an ACR20 response changes in Health Assessment Questionnaire ndash Disability Index (HAQ-DI) and rates of Disease Activity Score DAS28-4(ESR) less than 26

Study II was a 12-month trial in which 792 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to a nonbiologic DMARD received XELJANZ 5 or 10 mg twice daily or placebo added to background DMARD treatment (excluding potent immunosuppressive treatments such as azathioprine or cyclosporine) At the Month 3 visit nonresponding patients were advanced in a blinded fashion to a second predetermined treatment of XELJANZ 5 or 10 mg twice daily At the end of Month 6 all placebo patients were advanced to their second predetermined treatment in a blinded fashion The primary endpoints were the proportion of patients who achieved an ACR20 response at Month 6 changes in HAQ-DI at Month 3 and rates of DAS28-4(ESR) less than 26 at Month 6

Study III was a 12-month trial in 717 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to MTX Patients received XELJANZ 5 or 10 mg twice daily adalimumab 40 mg subcutaneously every other week or placebo added to background MTX

22

Reference ID 3213422

Placebo patients were advanced as in Study II The primary endpoints were the proportion of patients who achieved an ACR20 response at Month 6 HAQ-DI at Month 3 and DAS28-4(ESR) less than 26 at Month 6

Study IV is an ongoing 2-year trial with a planned analysis at 1 year in which 797 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to MTX received XELJANZ 5 or 10 mg twice daily or placebo added to background MTX Placebo patients were advanced as in Study II The primary endpoints were the proportion of patients who achieved an ACR20 response at Month 6 mean change from baseline in van der Heijde-modified total Sharp Score (mTSS) at Month 6 HAQ-DI at Month 3 and DAS28-4(ESR) less than 26 at Month 6

Study V was a 6-month trial in which 399 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to at least one approved TNF-inhibiting biologic agent received XELJANZ 5 or 10 mg twice daily or placebo added to background MTX At the Month 3 visit all patients randomized to placebo treatment were advanced in a blinded fashion to a second predetermined treatment of XELJANZ 5 or 10 mg twice daily The primary endpoints at Month 3 were the proportion of patients who achieved an ACR20 response HAQ-DI and DAS28-4(ESR) less than 26

Clinical Response The percentages of XELJANZ-treated patients achieving ACR20 ACR50 and ACR70 responses in Studies I IV and V are shown in Table 5 Similar results were observed with Studies II and III In all trials patients treated with either 5 or 10 mg twice daily XELJANZ had higher ACR20 ACR50 and ACR70 response rates versus placebo with or without background DMARD treatment at Month 3 and Month 6 Higher ACR20 response rates were observed within 2 weeks compared to placebo In the 12-month trials ACR response rates in XELJANZ-treated patients were consistent at 6 and 12 months

23

Reference ID 3213422

Table 5 Proportion of Patients with an ACR Response Percent of Patients

Monotherapy in Nonbiologic or Biologic DMARD Inadequate

Respondersc

MTX Inadequate Respondersd TNF Inhibitor Inadequate Responderse

Study I Study IV Study V

Na PBO

122

XELJANZ 5 mg Twice

Daily

243

XELJANZ 10 mg Twice Daily

245

PBO + MTX

160

XELJANZ 5 mg Twice

Daily + MTX

321

XELJANZ 10 mg Twice

Daily + MTX

316

PBO +

MTX

132

XELJANZ 5 mg Twice

Daily + MTX

133

XELJANZ 10 mg Twice

Daily + MTX

134 ACR20 Month 3 Month 6

26 NAb

59 69

65 70

27 25

55 50

67 62

24 NA

41 51

48 54

ACR50 Month 3 Month 6

12 NA

31 42

36 46

8 9

29 32

37 44

8 NA

26 37

28 30

ACR70 Month 3 Month 6

6 NA

15 22

20 29

3 1

11 14

17 23

2 NA

14 16

10 16

a N is number of randomized and treated patients b NA Not applicable as data for placebo treatment is not available beyond 3 months in Studies I and V due to placebo advancement c Inadequate response to at least one DMARD (biologic or nonbiologic) due to lack of efficacy or toxicity d Inadequate response to MTX defined as the presence of sufficient residual disease activity to meet the entry criteria e Inadequate response to a least one TNF inhibitor due to lack of efficacy andor intolerance

In Study IV a greater proportion of patients treated with XELJANZ 5 mg or 10 mg twice daily plus MTX achieved a low level of disease activity as measured by a DAS28-4(ESR) less than 26 at 6 months compared to those treated with MTX alone (Table 6)

24

Reference ID 3213422

Table 6 Proportion of Patients with DAS28-4(ESR) Less Than 26 with Number of Residual Active Joints Study IV DAS28-4(ESR) Less Than 26 Placebo + MTX

160

XELJANZ 5 mg Twice Daily + MTX

321

XELJANZ 10 mg Twice Daily + MTX

316 Proportion of responders at Month 6 (n) 1 (2) 6 (19) 13 (42)

Of responders proportion with 0 active joints (n)

50 (1) 42 (8) 36 (15)

Of responders proportion with 1 active joint (n) 0 5 (1) 17 (7) Of responders proportion with 2 active joints (n)

0 32 (6) 7 (3)

Of responders proportion with 3 or more active joints (n)

50 (1) 21 (4) 40 (17)

The results of the components of the ACR response criteria for Study IV are shown in Table 7 Similar results were observed in Studies I II III and V

Table 7 Components of ACR Response at 3 Months Study IV

XELJANZ

5 mg

Twice Daily + MTX

N=321

XELJANZ

10 mg

Twice Daily + MTX

N=316

Placebo + MTX

N=160

Component (mean) a Baseline Month 3a Baseline Month 3a Baseline Month 3a

Number of tender

joints 24 13 23 10 23 18

(0-68) (14) (14) (15) (12) (13) (14)

Number of swollen

joints 14 6 14 6 14 10

(0-66) (8) (8) (8) (7) (9) (9)

Painb 58

(23)

34

(23)

58

(24)

29

(22)

55

(24)

47

(24)

Patient global

assessmentb

58

(24)

35

(23)

57

(23)

29

(20)

54

(23)

47

(24)

Disability index

(HAQ-DI)c 141 099 140 084 132 119

(068) (065) (066) (064) (067) (068)

25

Reference ID 3213422

Physician global

assessmentb 59 30 58 24 56 43

(16) (19) (17) (17) (18) (22)

CRP (mgL) 153 71 171 44 137 146

(190) (191) (269) (86) (149) (187) aData shown is mean (Standard Deviation) at Month 3bVisual analog scale 0 = best 100 = worst cHealth Assessment Questionnaire Disability Index 0 = best 3 = worst 20 questions categories dressing and grooming arising eating walking hygiene reach grip and activities

The percent of ACR20 responders by visit for Study IV is shown in Figure 5 Similar responses were observed in Studies I II III and V

Figure 5 Percentage of ACR20 Responders by Visit for Study IV

Physical Function Response Improvement in physical functioning was measured by the HAQ-DI Patients receiving XELJANZ 5 and 10 mg twice daily demonstrated greater improvement from baseline in physical functioning compared to placebo at Month 3

The mean (95 CI) difference from placebo in HAQ-DI improvement from baseline at Month 3 in Study III was -022 (-035 -010) in patients receiving 5 mg XELJANZ twice daily and -032 (-044 -019) in patients receiving 10 mg XELJANZ twice daily Similar results were obtained in

26

Reference ID 3213422

Studies I II IV and V In the 12-month trials HAQ-DI results in XELJANZ-treated patients were consistent at 6 and 12 months

16 HOW SUPPLIEDSTORAGE AND HANDLING XELJANZ is provided as 5 mg tofacitinib (equivalent to 8 mg tofacitinib citrate) tablets White round immediate-release film-coated tablets debossed with ldquoPfizerrdquo on one side and ldquoJKI 5rdquo on the other side and available in

Bottles of 60 NDC 0069-1001-01 Bottles of 180 NDC 0069-1001-02

Storage and Handling Store at 20degC to 25degC (68degF to 77degF) [See USP Controlled Room Temperature]

Do not repackage

17 PATIENT COUNSELING INFORMATION See FDA-approved patient labeling (Medication Guide)

Inform patients of the availability of a Medication Guide and instruct them to read the Medication Guide prior to taking XELJANZ Instruct patients to take XELJANZ only as prescribed

This productrsquos label may have been updated For current full prescribing information please visit wwwpfizercom

LAB-0445-10

27

Reference ID 3213422

MEDICATION GUIDE

XELJANZ (ZELrsquo JANSrsquo) (tofacitinib)

Read this Medication Guide before you start taking XELJANZ and each time you get a refill There may be new information This Medication Guide does not take the place of talking to your healthcare provider about your medical condition or treatment

What is the most important information I should know about XELJANZ XELJANZ may cause serious side effects including

1 Serious infections

XELJANZ is a medicine that affects your immune system XELJANZ can lower the ability of your immune system to fight infections Some people have serious infections while taking XELJANZ including tuberculosis (TB) and infections caused by bacteria fungi or viruses that can spread throughout the body Some people have died from these infections Your healthcare provider should test you for TB before starting XELJANZ Your healthcare provider should monitor you closely for signs and symptoms of

TB infection during treatment with XELJANZ

You should not start taking XELJANZ if you have any kind of infection unless your healthcare provider tells you it is okay

Before starting XELJANZ tell your healthcare provider if you think you have an infection or have symptoms of an infection such as

o fever sweating or chills o warm red or painful skin o muscle aches or sores on your body o cough o diarrhea or stomach pain o shortness of breath o burning when you urinate o blood in phlegm or urinating more often o weight loss than normal

o feeling very tired are being treated for an infection get a lot of infections or have infections that keep coming back have diabetes HIV or a weak immune system People with these conditions

have a higher chance for infections have TB or have been in close contact with someone with TB live or have lived or have traveled to certain parts of the country (such as the

Ohio and Mississippi River valleys and the Southwest) where there is an increased chance for getting certain kinds of fungal infections (histoplasmosis coccidioidomycosis or blastomycosis) These infections may happen or become more severe if you use XELJANZ Ask your healthcare provider if you do not know if you have lived in an area where these infections are common

have or have had hepatitis B or C

28

Reference ID 3213422

After starting XELJANZ call your healthcare provider right away if you have any symptoms of an infection XELJANZ can make you more likely to get infections or make worse any infection that you have

2 Cancer and immune system problems

XELJANZ may increase your risk of certain cancers by changing the way your immune system works

Lymphoma and other cancers can happen in patients taking XELJANZ Tell your healthcare provider if you have ever had any type of cancer

Some people who have taken XELJANZ with certain other medicines to prevent kidney transplant rejection have had a problem with certain white blood cells growing out of control (Epstein Barr Virus-associated post transplant lymphoproliferative disorder)

3 Tears (perforation) in the stomach or intestines

Tell your healthcare provider if you have had diverticulitis (inflammation in parts of the large intestine) or ulcers in your stomach or intestines Some people taking XELJANZ get tears in their stomach or intestine This happens most often in people who also take nonsteroidal anti-inflammatory drugs (NSAIDs) corticosteroids or methotrexate

Tell your healthcare provider right away if you have fever and stomach-area pain that does not go away and a change in your bowel habits

4 Changes in certain laboratory test results Your healthcare provider should do blood tests before you start receiving XELJANZ and while you take XELJANZ to check for the following side effects

changes in lymphocyte counts Lymphocytes are white blood cells that help the body fight off infections

low neutrophil counts Neutrophils are white blood cells that help the body fight off infections

low red blood cell count This may mean that you have anemia which may make you feel weak and tired

Your healthcare provider should routinely check certain liver tests

You should not receive XELJANZ if your lymphocyte count neutrophil count or red blood cell count is too low or your liver tests are too high

Your healthcare provider may stop your XELJANZ treatment for a period of time if needed because of changes in these blood test results

29

Reference ID 3213422

You may also have changes in other laboratory tests such as your blood cholesterol levels Your healthcare provider should do blood tests to check your cholesterol levels 4 to 8 weeks after you start receiving XELJANZ and as needed after that Normal cholesterol levels are important to good heart health

See ldquoWhat are the possible side effects of XELJANZrdquo for more information about side effects

What is XELJANZ

XELJANZ is a prescription medicine called a Janus kinase (JAK) inhibitor XELJANZ is used to treat adults with moderately to severely active rheumatoid arthritis in which methotrexate did not work well

It is not known if XELJANZ is safe and effective in people with Hepatitis B or C

XELJANZ is not for people with severe liver problems

It is not known if XELJANZ is safe and effective in children

What should I tell my healthcare provider before taking XELJANZ

XELJANZ may not be right for you Before taking XELJANZ tell your healthcare provider if you have an infection See ldquoWhat is the most important information I should know

about XELJANZrdquo have liver problems have kidney problems have any stomach area (abdominal) pain or been diagnosed with diverticulitis or

ulcers in your stomach or intestines have had a reaction to tofacitinib or any of the ingredients in XELJANZ have recently received or are scheduled to receive a vaccine People who take

XELJANZ should not receive live vaccines People taking XELJANZ can receive non-live vaccines

have any other medical conditions plan to become pregnant or are pregnant It is not known if XELJANZ will harm

an unborn baby

Pregnancy Registry Pfizer has a registry for pregnant women who take XELJANZ The purpose of this registry is to check the health of the pregnant mother and her baby If you are pregnant or become pregnant while taking XELJANZ talk to your healthcare provider about how you can join this pregnancy registry or you may contact the registry at 1-877-311-8972 to enroll

plan to breastfeed or are breastfeeding You and your healthcare provider should decide if you will take XELJANZ or breastfeed You should not do both

30

Reference ID 3213422

Tell your healthcare provider about all the medicines you take including prescription and non-prescription medicines vitamins and herbal supplements XELJANZ and other medicines may affect each other causing side effects

Especially tell your healthcare provider if you take any other medicines to treat your rheumatoid arthritis You should not take

tocilizumab (Actemrareg) etanercept (Enbrelreg) adalimumab (Humirareg) infliximab (Remicadereg) rituximab (Rituxanreg) abatacept (Orenciareg) anakinra (Kineretreg) certolizumab (Cimziareg) golimumab (Simponireg) azathioprine cyclosporine or other immunosuppressive drugs while you are taking XELJANZ Taking XELJANZ with these medicines may increase your risk of infection

medicines that affect the way certain liver enzymes work Ask your healthcare provider if you are not sure if your medicine is one of these

Know the medicines you take Keep a list of them to show your healthcare provider and pharmacist when you get a new medicine

How should I take XELJANZ

Take XELJANZ as your healthcare provider tells you to take it

Take XELJANZ 2 times a day with or without food

If you take too much XELJANZ call your healthcare provider or go the nearest hospital emergency room right away

What are possible side effects of XELJANZ

XELJANZ may cause serious side effects including

See ldquoWhat is the most important information I should know about XELJANZrdquo

Hepatitis B or C activation infection in people who carry the virus in their blood If you are a carrier of the hepatitis B or C virus (viruses that affect the liver) the virus may become active while you use XELJANZ Your healthcare provider may do blood tests before you start treatment with XELJANZ and while you are using XELJANZ Tell your healthcare provider if you have any of the following symptoms of a possible hepatitis B or C infection

o feel very tired o fevers o skin or eyes look yellow o chills o little or no appetite o stomach discomfort o vomiting o muscle aches o clay-colored bowel o dark urine

movements o skin rash

31

Reference ID 3213422

Common side effects of XELJANZ include upper respiratory tract infections (common cold sinus infections) headache diarrhea nasal congestion sore throat and runny nose (nasopharyngitis)

Tell your healthcare provider if you have any side effect that bothers you or that does not go away

These are not all the possible side effects of XELJANZ For more information ask your healthcare provider or pharmacist

Call your doctor for medical advice about side effects You may report side effects to FDA at 1-800-FDA-1088

You may also report side effects to Pfizer at 1-800-438-1985

How should I store XELJANZ

Store XELJANZ at 68degF to 77degF (room temperature)

Safely throw away medicine that is out of date or no longer needed

Keep XELJANZ and all medicines out of the reach of children

General information about the safe and effective use of XELJANZ

Medicines are sometimes prescribed for purposes other than those listed in a Medication Guide Do not use XELJANZ for a condition for which it was not prescribed Do not give XELJANZ to other people even if they have the same symptoms you have It may harm them

This Medication Guide summarizes the most important information about XELJANZ If you would like more information talk to your healthcare provider You can ask your pharmacist or healthcare provider for information about XELJANZ that is written for health professionals

What are the ingredients in XELJANZ

Active ingredient tofacitinib citrate

Inactive ingredients microcrystalline cellulose lactose monohydrate croscarmellose sodium magnesium stearate HPMC 2910Hypromellose 6cP titanium dioxide macrogolPEG3350 and triacetin

32

Reference ID 3213422

This Medication Guide has been approved by the US Food and Drug Administration

LAB-0535-10 Issued November 2012

33

Reference ID 3213422

Placebo patients were advanced as in Study II The primary endpoints were the proportion of patients who achieved an ACR20 response at Month 6 HAQ-DI at Month 3 and DAS28-4(ESR) less than 26 at Month 6

Study IV is an ongoing 2-year trial with a planned analysis at 1 year in which 797 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to MTX received XELJANZ 5 or 10 mg twice daily or placebo added to background MTX Placebo patients were advanced as in Study II The primary endpoints were the proportion of patients who achieved an ACR20 response at Month 6 mean change from baseline in van der Heijde-modified total Sharp Score (mTSS) at Month 6 HAQ-DI at Month 3 and DAS28-4(ESR) less than 26 at Month 6

Study V was a 6-month trial in which 399 patients with moderate to severe active rheumatoid arthritis who had an inadequate response to at least one approved TNF-inhibiting biologic agent received XELJANZ 5 or 10 mg twice daily or placebo added to background MTX At the Month 3 visit all patients randomized to placebo treatment were advanced in a blinded fashion to a second predetermined treatment of XELJANZ 5 or 10 mg twice daily The primary endpoints at Month 3 were the proportion of patients who achieved an ACR20 response HAQ-DI and DAS28-4(ESR) less than 26

Clinical Response The percentages of XELJANZ-treated patients achieving ACR20 ACR50 and ACR70 responses in Studies I IV and V are shown in Table 5 Similar results were observed with Studies II and III In all trials patients treated with either 5 or 10 mg twice daily XELJANZ had higher ACR20 ACR50 and ACR70 response rates versus placebo with or without background DMARD treatment at Month 3 and Month 6 Higher ACR20 response rates were observed within 2 weeks compared to placebo In the 12-month trials ACR response rates in XELJANZ-treated patients were consistent at 6 and 12 months

23

Reference ID 3213422

Table 5 Proportion of Patients with an ACR Response Percent of Patients

Monotherapy in Nonbiologic or Biologic DMARD Inadequate

Respondersc

MTX Inadequate Respondersd TNF Inhibitor Inadequate Responderse

Study I Study IV Study V

Na PBO

122

XELJANZ 5 mg Twice

Daily

243

XELJANZ 10 mg Twice Daily

245

PBO + MTX

160

XELJANZ 5 mg Twice

Daily + MTX

321

XELJANZ 10 mg Twice

Daily + MTX

316

PBO +

MTX

132

XELJANZ 5 mg Twice

Daily + MTX

133

XELJANZ 10 mg Twice

Daily + MTX

134 ACR20 Month 3 Month 6

26 NAb

59 69

65 70

27 25

55 50

67 62

24 NA

41 51

48 54

ACR50 Month 3 Month 6

12 NA

31 42

36 46

8 9

29 32

37 44

8 NA

26 37

28 30

ACR70 Month 3 Month 6

6 NA

15 22

20 29

3 1

11 14

17 23

2 NA

14 16

10 16

a N is number of randomized and treated patients b NA Not applicable as data for placebo treatment is not available beyond 3 months in Studies I and V due to placebo advancement c Inadequate response to at least one DMARD (biologic or nonbiologic) due to lack of efficacy or toxicity d Inadequate response to MTX defined as the presence of sufficient residual disease activity to meet the entry criteria e Inadequate response to a least one TNF inhibitor due to lack of efficacy andor intolerance

In Study IV a greater proportion of patients treated with XELJANZ 5 mg or 10 mg twice daily plus MTX achieved a low level of disease activity as measured by a DAS28-4(ESR) less than 26 at 6 months compared to those treated with MTX alone (Table 6)

24

Reference ID 3213422

Table 6 Proportion of Patients with DAS28-4(ESR) Less Than 26 with Number of Residual Active Joints Study IV DAS28-4(ESR) Less Than 26 Placebo + MTX

160

XELJANZ 5 mg Twice Daily + MTX

321

XELJANZ 10 mg Twice Daily + MTX

316 Proportion of responders at Month 6 (n) 1 (2) 6 (19) 13 (42)

Of responders proportion with 0 active joints (n)

50 (1) 42 (8) 36 (15)

Of responders proportion with 1 active joint (n) 0 5 (1) 17 (7) Of responders proportion with 2 active joints (n)

0 32 (6) 7 (3)

Of responders proportion with 3 or more active joints (n)

50 (1) 21 (4) 40 (17)

The results of the components of the ACR response criteria for Study IV are shown in Table 7 Similar results were observed in Studies I II III and V

Table 7 Components of ACR Response at 3 Months Study IV

XELJANZ

5 mg

Twice Daily + MTX

N=321

XELJANZ

10 mg

Twice Daily + MTX

N=316

Placebo + MTX

N=160

Component (mean) a Baseline Month 3a Baseline Month 3a Baseline Month 3a

Number of tender

joints 24 13 23 10 23 18

(0-68) (14) (14) (15) (12) (13) (14)

Number of swollen

joints 14 6 14 6 14 10

(0-66) (8) (8) (8) (7) (9) (9)

Painb 58

(23)

34

(23)

58

(24)

29

(22)

55

(24)

47

(24)

Patient global

assessmentb

58

(24)

35

(23)

57

(23)

29

(20)

54

(23)

47

(24)

Disability index

(HAQ-DI)c 141 099 140 084 132 119

(068) (065) (066) (064) (067) (068)

25

Reference ID 3213422

Physician global

assessmentb 59 30 58 24 56 43

(16) (19) (17) (17) (18) (22)

CRP (mgL) 153 71 171 44 137 146

(190) (191) (269) (86) (149) (187) aData shown is mean (Standard Deviation) at Month 3bVisual analog scale 0 = best 100 = worst cHealth Assessment Questionnaire Disability Index 0 = best 3 = worst 20 questions categories dressing and grooming arising eating walking hygiene reach grip and activities

The percent of ACR20 responders by visit for Study IV is shown in Figure 5 Similar responses were observed in Studies I II III and V

Figure 5 Percentage of ACR20 Responders by Visit for Study IV

Physical Function Response Improvement in physical functioning was measured by the HAQ-DI Patients receiving XELJANZ 5 and 10 mg twice daily demonstrated greater improvement from baseline in physical functioning compared to placebo at Month 3

The mean (95 CI) difference from placebo in HAQ-DI improvement from baseline at Month 3 in Study III was -022 (-035 -010) in patients receiving 5 mg XELJANZ twice daily and -032 (-044 -019) in patients receiving 10 mg XELJANZ twice daily Similar results were obtained in

26

Reference ID 3213422

Studies I II IV and V In the 12-month trials HAQ-DI results in XELJANZ-treated patients were consistent at 6 and 12 months

16 HOW SUPPLIEDSTORAGE AND HANDLING XELJANZ is provided as 5 mg tofacitinib (equivalent to 8 mg tofacitinib citrate) tablets White round immediate-release film-coated tablets debossed with ldquoPfizerrdquo on one side and ldquoJKI 5rdquo on the other side and available in

Bottles of 60 NDC 0069-1001-01 Bottles of 180 NDC 0069-1001-02

Storage and Handling Store at 20degC to 25degC (68degF to 77degF) [See USP Controlled Room Temperature]

Do not repackage

17 PATIENT COUNSELING INFORMATION See FDA-approved patient labeling (Medication Guide)

Inform patients of the availability of a Medication Guide and instruct them to read the Medication Guide prior to taking XELJANZ Instruct patients to take XELJANZ only as prescribed

This productrsquos label may have been updated For current full prescribing information please visit wwwpfizercom

LAB-0445-10

27

Reference ID 3213422

MEDICATION GUIDE

XELJANZ (ZELrsquo JANSrsquo) (tofacitinib)

Read this Medication Guide before you start taking XELJANZ and each time you get a refill There may be new information This Medication Guide does not take the place of talking to your healthcare provider about your medical condition or treatment

What is the most important information I should know about XELJANZ XELJANZ may cause serious side effects including

1 Serious infections

XELJANZ is a medicine that affects your immune system XELJANZ can lower the ability of your immune system to fight infections Some people have serious infections while taking XELJANZ including tuberculosis (TB) and infections caused by bacteria fungi or viruses that can spread throughout the body Some people have died from these infections Your healthcare provider should test you for TB before starting XELJANZ Your healthcare provider should monitor you closely for signs and symptoms of

TB infection during treatment with XELJANZ

You should not start taking XELJANZ if you have any kind of infection unless your healthcare provider tells you it is okay

Before starting XELJANZ tell your healthcare provider if you think you have an infection or have symptoms of an infection such as

o fever sweating or chills o warm red or painful skin o muscle aches or sores on your body o cough o diarrhea or stomach pain o shortness of breath o burning when you urinate o blood in phlegm or urinating more often o weight loss than normal

o feeling very tired are being treated for an infection get a lot of infections or have infections that keep coming back have diabetes HIV or a weak immune system People with these conditions

have a higher chance for infections have TB or have been in close contact with someone with TB live or have lived or have traveled to certain parts of the country (such as the

Ohio and Mississippi River valleys and the Southwest) where there is an increased chance for getting certain kinds of fungal infections (histoplasmosis coccidioidomycosis or blastomycosis) These infections may happen or become more severe if you use XELJANZ Ask your healthcare provider if you do not know if you have lived in an area where these infections are common

have or have had hepatitis B or C

28

Reference ID 3213422

After starting XELJANZ call your healthcare provider right away if you have any symptoms of an infection XELJANZ can make you more likely to get infections or make worse any infection that you have

2 Cancer and immune system problems

XELJANZ may increase your risk of certain cancers by changing the way your immune system works

Lymphoma and other cancers can happen in patients taking XELJANZ Tell your healthcare provider if you have ever had any type of cancer

Some people who have taken XELJANZ with certain other medicines to prevent kidney transplant rejection have had a problem with certain white blood cells growing out of control (Epstein Barr Virus-associated post transplant lymphoproliferative disorder)

3 Tears (perforation) in the stomach or intestines

Tell your healthcare provider if you have had diverticulitis (inflammation in parts of the large intestine) or ulcers in your stomach or intestines Some people taking XELJANZ get tears in their stomach or intestine This happens most often in people who also take nonsteroidal anti-inflammatory drugs (NSAIDs) corticosteroids or methotrexate

Tell your healthcare provider right away if you have fever and stomach-area pain that does not go away and a change in your bowel habits

4 Changes in certain laboratory test results Your healthcare provider should do blood tests before you start receiving XELJANZ and while you take XELJANZ to check for the following side effects

changes in lymphocyte counts Lymphocytes are white blood cells that help the body fight off infections

low neutrophil counts Neutrophils are white blood cells that help the body fight off infections

low red blood cell count This may mean that you have anemia which may make you feel weak and tired

Your healthcare provider should routinely check certain liver tests

You should not receive XELJANZ if your lymphocyte count neutrophil count or red blood cell count is too low or your liver tests are too high

Your healthcare provider may stop your XELJANZ treatment for a period of time if needed because of changes in these blood test results

29

Reference ID 3213422

You may also have changes in other laboratory tests such as your blood cholesterol levels Your healthcare provider should do blood tests to check your cholesterol levels 4 to 8 weeks after you start receiving XELJANZ and as needed after that Normal cholesterol levels are important to good heart health

See ldquoWhat are the possible side effects of XELJANZrdquo for more information about side effects

What is XELJANZ

XELJANZ is a prescription medicine called a Janus kinase (JAK) inhibitor XELJANZ is used to treat adults with moderately to severely active rheumatoid arthritis in which methotrexate did not work well

It is not known if XELJANZ is safe and effective in people with Hepatitis B or C

XELJANZ is not for people with severe liver problems

It is not known if XELJANZ is safe and effective in children

What should I tell my healthcare provider before taking XELJANZ

XELJANZ may not be right for you Before taking XELJANZ tell your healthcare provider if you have an infection See ldquoWhat is the most important information I should know

about XELJANZrdquo have liver problems have kidney problems have any stomach area (abdominal) pain or been diagnosed with diverticulitis or

ulcers in your stomach or intestines have had a reaction to tofacitinib or any of the ingredients in XELJANZ have recently received or are scheduled to receive a vaccine People who take

XELJANZ should not receive live vaccines People taking XELJANZ can receive non-live vaccines

have any other medical conditions plan to become pregnant or are pregnant It is not known if XELJANZ will harm

an unborn baby

Pregnancy Registry Pfizer has a registry for pregnant women who take XELJANZ The purpose of this registry is to check the health of the pregnant mother and her baby If you are pregnant or become pregnant while taking XELJANZ talk to your healthcare provider about how you can join this pregnancy registry or you may contact the registry at 1-877-311-8972 to enroll

plan to breastfeed or are breastfeeding You and your healthcare provider should decide if you will take XELJANZ or breastfeed You should not do both

30

Reference ID 3213422

Tell your healthcare provider about all the medicines you take including prescription and non-prescription medicines vitamins and herbal supplements XELJANZ and other medicines may affect each other causing side effects

Especially tell your healthcare provider if you take any other medicines to treat your rheumatoid arthritis You should not take

tocilizumab (Actemrareg) etanercept (Enbrelreg) adalimumab (Humirareg) infliximab (Remicadereg) rituximab (Rituxanreg) abatacept (Orenciareg) anakinra (Kineretreg) certolizumab (Cimziareg) golimumab (Simponireg) azathioprine cyclosporine or other immunosuppressive drugs while you are taking XELJANZ Taking XELJANZ with these medicines may increase your risk of infection

medicines that affect the way certain liver enzymes work Ask your healthcare provider if you are not sure if your medicine is one of these

Know the medicines you take Keep a list of them to show your healthcare provider and pharmacist when you get a new medicine

How should I take XELJANZ

Take XELJANZ as your healthcare provider tells you to take it

Take XELJANZ 2 times a day with or without food

If you take too much XELJANZ call your healthcare provider or go the nearest hospital emergency room right away

What are possible side effects of XELJANZ

XELJANZ may cause serious side effects including

See ldquoWhat is the most important information I should know about XELJANZrdquo

Hepatitis B or C activation infection in people who carry the virus in their blood If you are a carrier of the hepatitis B or C virus (viruses that affect the liver) the virus may become active while you use XELJANZ Your healthcare provider may do blood tests before you start treatment with XELJANZ and while you are using XELJANZ Tell your healthcare provider if you have any of the following symptoms of a possible hepatitis B or C infection

o feel very tired o fevers o skin or eyes look yellow o chills o little or no appetite o stomach discomfort o vomiting o muscle aches o clay-colored bowel o dark urine

movements o skin rash

31

Reference ID 3213422

Common side effects of XELJANZ include upper respiratory tract infections (common cold sinus infections) headache diarrhea nasal congestion sore throat and runny nose (nasopharyngitis)

Tell your healthcare provider if you have any side effect that bothers you or that does not go away

These are not all the possible side effects of XELJANZ For more information ask your healthcare provider or pharmacist

Call your doctor for medical advice about side effects You may report side effects to FDA at 1-800-FDA-1088

You may also report side effects to Pfizer at 1-800-438-1985

How should I store XELJANZ

Store XELJANZ at 68degF to 77degF (room temperature)

Safely throw away medicine that is out of date or no longer needed

Keep XELJANZ and all medicines out of the reach of children

General information about the safe and effective use of XELJANZ

Medicines are sometimes prescribed for purposes other than those listed in a Medication Guide Do not use XELJANZ for a condition for which it was not prescribed Do not give XELJANZ to other people even if they have the same symptoms you have It may harm them

This Medication Guide summarizes the most important information about XELJANZ If you would like more information talk to your healthcare provider You can ask your pharmacist or healthcare provider for information about XELJANZ that is written for health professionals

What are the ingredients in XELJANZ

Active ingredient tofacitinib citrate

Inactive ingredients microcrystalline cellulose lactose monohydrate croscarmellose sodium magnesium stearate HPMC 2910Hypromellose 6cP titanium dioxide macrogolPEG3350 and triacetin

32

Reference ID 3213422

This Medication Guide has been approved by the US Food and Drug Administration

LAB-0535-10 Issued November 2012

33

Reference ID 3213422

Table 5 Proportion of Patients with an ACR Response Percent of Patients

Monotherapy in Nonbiologic or Biologic DMARD Inadequate

Respondersc

MTX Inadequate Respondersd TNF Inhibitor Inadequate Responderse

Study I Study IV Study V

Na PBO

122

XELJANZ 5 mg Twice

Daily

243

XELJANZ 10 mg Twice Daily

245

PBO + MTX

160

XELJANZ 5 mg Twice

Daily + MTX

321

XELJANZ 10 mg Twice

Daily + MTX

316

PBO +

MTX

132

XELJANZ 5 mg Twice

Daily + MTX

133

XELJANZ 10 mg Twice

Daily + MTX

134 ACR20 Month 3 Month 6

26 NAb

59 69

65 70

27 25

55 50

67 62

24 NA

41 51

48 54

ACR50 Month 3 Month 6

12 NA

31 42

36 46

8 9

29 32

37 44

8 NA

26 37

28 30

ACR70 Month 3 Month 6

6 NA

15 22

20 29

3 1

11 14

17 23

2 NA

14 16

10 16

a N is number of randomized and treated patients b NA Not applicable as data for placebo treatment is not available beyond 3 months in Studies I and V due to placebo advancement c Inadequate response to at least one DMARD (biologic or nonbiologic) due to lack of efficacy or toxicity d Inadequate response to MTX defined as the presence of sufficient residual disease activity to meet the entry criteria e Inadequate response to a least one TNF inhibitor due to lack of efficacy andor intolerance

In Study IV a greater proportion of patients treated with XELJANZ 5 mg or 10 mg twice daily plus MTX achieved a low level of disease activity as measured by a DAS28-4(ESR) less than 26 at 6 months compared to those treated with MTX alone (Table 6)

24

Reference ID 3213422

Table 6 Proportion of Patients with DAS28-4(ESR) Less Than 26 with Number of Residual Active Joints Study IV DAS28-4(ESR) Less Than 26 Placebo + MTX

160

XELJANZ 5 mg Twice Daily + MTX

321

XELJANZ 10 mg Twice Daily + MTX

316 Proportion of responders at Month 6 (n) 1 (2) 6 (19) 13 (42)

Of responders proportion with 0 active joints (n)

50 (1) 42 (8) 36 (15)

Of responders proportion with 1 active joint (n) 0 5 (1) 17 (7) Of responders proportion with 2 active joints (n)

0 32 (6) 7 (3)

Of responders proportion with 3 or more active joints (n)

50 (1) 21 (4) 40 (17)

The results of the components of the ACR response criteria for Study IV are shown in Table 7 Similar results were observed in Studies I II III and V

Table 7 Components of ACR Response at 3 Months Study IV

XELJANZ

5 mg

Twice Daily + MTX

N=321

XELJANZ

10 mg

Twice Daily + MTX

N=316

Placebo + MTX

N=160

Component (mean) a Baseline Month 3a Baseline Month 3a Baseline Month 3a

Number of tender

joints 24 13 23 10 23 18

(0-68) (14) (14) (15) (12) (13) (14)

Number of swollen

joints 14 6 14 6 14 10

(0-66) (8) (8) (8) (7) (9) (9)

Painb 58

(23)

34

(23)

58

(24)

29

(22)

55

(24)

47

(24)

Patient global

assessmentb

58

(24)

35

(23)

57

(23)

29

(20)

54

(23)

47

(24)

Disability index

(HAQ-DI)c 141 099 140 084 132 119

(068) (065) (066) (064) (067) (068)

25

Reference ID 3213422

Physician global

assessmentb 59 30 58 24 56 43

(16) (19) (17) (17) (18) (22)

CRP (mgL) 153 71 171 44 137 146

(190) (191) (269) (86) (149) (187) aData shown is mean (Standard Deviation) at Month 3bVisual analog scale 0 = best 100 = worst cHealth Assessment Questionnaire Disability Index 0 = best 3 = worst 20 questions categories dressing and grooming arising eating walking hygiene reach grip and activities

The percent of ACR20 responders by visit for Study IV is shown in Figure 5 Similar responses were observed in Studies I II III and V

Figure 5 Percentage of ACR20 Responders by Visit for Study IV

Physical Function Response Improvement in physical functioning was measured by the HAQ-DI Patients receiving XELJANZ 5 and 10 mg twice daily demonstrated greater improvement from baseline in physical functioning compared to placebo at Month 3

The mean (95 CI) difference from placebo in HAQ-DI improvement from baseline at Month 3 in Study III was -022 (-035 -010) in patients receiving 5 mg XELJANZ twice daily and -032 (-044 -019) in patients receiving 10 mg XELJANZ twice daily Similar results were obtained in

26

Reference ID 3213422

Studies I II IV and V In the 12-month trials HAQ-DI results in XELJANZ-treated patients were consistent at 6 and 12 months

16 HOW SUPPLIEDSTORAGE AND HANDLING XELJANZ is provided as 5 mg tofacitinib (equivalent to 8 mg tofacitinib citrate) tablets White round immediate-release film-coated tablets debossed with ldquoPfizerrdquo on one side and ldquoJKI 5rdquo on the other side and available in

Bottles of 60 NDC 0069-1001-01 Bottles of 180 NDC 0069-1001-02

Storage and Handling Store at 20degC to 25degC (68degF to 77degF) [See USP Controlled Room Temperature]

Do not repackage

17 PATIENT COUNSELING INFORMATION See FDA-approved patient labeling (Medication Guide)

Inform patients of the availability of a Medication Guide and instruct them to read the Medication Guide prior to taking XELJANZ Instruct patients to take XELJANZ only as prescribed

This productrsquos label may have been updated For current full prescribing information please visit wwwpfizercom

LAB-0445-10

27

Reference ID 3213422

MEDICATION GUIDE

XELJANZ (ZELrsquo JANSrsquo) (tofacitinib)

Read this Medication Guide before you start taking XELJANZ and each time you get a refill There may be new information This Medication Guide does not take the place of talking to your healthcare provider about your medical condition or treatment

What is the most important information I should know about XELJANZ XELJANZ may cause serious side effects including

1 Serious infections

XELJANZ is a medicine that affects your immune system XELJANZ can lower the ability of your immune system to fight infections Some people have serious infections while taking XELJANZ including tuberculosis (TB) and infections caused by bacteria fungi or viruses that can spread throughout the body Some people have died from these infections Your healthcare provider should test you for TB before starting XELJANZ Your healthcare provider should monitor you closely for signs and symptoms of

TB infection during treatment with XELJANZ

You should not start taking XELJANZ if you have any kind of infection unless your healthcare provider tells you it is okay

Before starting XELJANZ tell your healthcare provider if you think you have an infection or have symptoms of an infection such as

o fever sweating or chills o warm red or painful skin o muscle aches or sores on your body o cough o diarrhea or stomach pain o shortness of breath o burning when you urinate o blood in phlegm or urinating more often o weight loss than normal

o feeling very tired are being treated for an infection get a lot of infections or have infections that keep coming back have diabetes HIV or a weak immune system People with these conditions

have a higher chance for infections have TB or have been in close contact with someone with TB live or have lived or have traveled to certain parts of the country (such as the

Ohio and Mississippi River valleys and the Southwest) where there is an increased chance for getting certain kinds of fungal infections (histoplasmosis coccidioidomycosis or blastomycosis) These infections may happen or become more severe if you use XELJANZ Ask your healthcare provider if you do not know if you have lived in an area where these infections are common

have or have had hepatitis B or C

28

Reference ID 3213422

After starting XELJANZ call your healthcare provider right away if you have any symptoms of an infection XELJANZ can make you more likely to get infections or make worse any infection that you have

2 Cancer and immune system problems

XELJANZ may increase your risk of certain cancers by changing the way your immune system works

Lymphoma and other cancers can happen in patients taking XELJANZ Tell your healthcare provider if you have ever had any type of cancer

Some people who have taken XELJANZ with certain other medicines to prevent kidney transplant rejection have had a problem with certain white blood cells growing out of control (Epstein Barr Virus-associated post transplant lymphoproliferative disorder)

3 Tears (perforation) in the stomach or intestines

Tell your healthcare provider if you have had diverticulitis (inflammation in parts of the large intestine) or ulcers in your stomach or intestines Some people taking XELJANZ get tears in their stomach or intestine This happens most often in people who also take nonsteroidal anti-inflammatory drugs (NSAIDs) corticosteroids or methotrexate

Tell your healthcare provider right away if you have fever and stomach-area pain that does not go away and a change in your bowel habits

4 Changes in certain laboratory test results Your healthcare provider should do blood tests before you start receiving XELJANZ and while you take XELJANZ to check for the following side effects

changes in lymphocyte counts Lymphocytes are white blood cells that help the body fight off infections

low neutrophil counts Neutrophils are white blood cells that help the body fight off infections

low red blood cell count This may mean that you have anemia which may make you feel weak and tired

Your healthcare provider should routinely check certain liver tests

You should not receive XELJANZ if your lymphocyte count neutrophil count or red blood cell count is too low or your liver tests are too high

Your healthcare provider may stop your XELJANZ treatment for a period of time if needed because of changes in these blood test results

29

Reference ID 3213422

You may also have changes in other laboratory tests such as your blood cholesterol levels Your healthcare provider should do blood tests to check your cholesterol levels 4 to 8 weeks after you start receiving XELJANZ and as needed after that Normal cholesterol levels are important to good heart health

See ldquoWhat are the possible side effects of XELJANZrdquo for more information about side effects

What is XELJANZ

XELJANZ is a prescription medicine called a Janus kinase (JAK) inhibitor XELJANZ is used to treat adults with moderately to severely active rheumatoid arthritis in which methotrexate did not work well

It is not known if XELJANZ is safe and effective in people with Hepatitis B or C

XELJANZ is not for people with severe liver problems

It is not known if XELJANZ is safe and effective in children

What should I tell my healthcare provider before taking XELJANZ

XELJANZ may not be right for you Before taking XELJANZ tell your healthcare provider if you have an infection See ldquoWhat is the most important information I should know

about XELJANZrdquo have liver problems have kidney problems have any stomach area (abdominal) pain or been diagnosed with diverticulitis or

ulcers in your stomach or intestines have had a reaction to tofacitinib or any of the ingredients in XELJANZ have recently received or are scheduled to receive a vaccine People who take

XELJANZ should not receive live vaccines People taking XELJANZ can receive non-live vaccines

have any other medical conditions plan to become pregnant or are pregnant It is not known if XELJANZ will harm

an unborn baby

Pregnancy Registry Pfizer has a registry for pregnant women who take XELJANZ The purpose of this registry is to check the health of the pregnant mother and her baby If you are pregnant or become pregnant while taking XELJANZ talk to your healthcare provider about how you can join this pregnancy registry or you may contact the registry at 1-877-311-8972 to enroll

plan to breastfeed or are breastfeeding You and your healthcare provider should decide if you will take XELJANZ or breastfeed You should not do both

30

Reference ID 3213422

Tell your healthcare provider about all the medicines you take including prescription and non-prescription medicines vitamins and herbal supplements XELJANZ and other medicines may affect each other causing side effects

Especially tell your healthcare provider if you take any other medicines to treat your rheumatoid arthritis You should not take

tocilizumab (Actemrareg) etanercept (Enbrelreg) adalimumab (Humirareg) infliximab (Remicadereg) rituximab (Rituxanreg) abatacept (Orenciareg) anakinra (Kineretreg) certolizumab (Cimziareg) golimumab (Simponireg) azathioprine cyclosporine or other immunosuppressive drugs while you are taking XELJANZ Taking XELJANZ with these medicines may increase your risk of infection

medicines that affect the way certain liver enzymes work Ask your healthcare provider if you are not sure if your medicine is one of these

Know the medicines you take Keep a list of them to show your healthcare provider and pharmacist when you get a new medicine

How should I take XELJANZ

Take XELJANZ as your healthcare provider tells you to take it

Take XELJANZ 2 times a day with or without food

If you take too much XELJANZ call your healthcare provider or go the nearest hospital emergency room right away

What are possible side effects of XELJANZ

XELJANZ may cause serious side effects including

See ldquoWhat is the most important information I should know about XELJANZrdquo

Hepatitis B or C activation infection in people who carry the virus in their blood If you are a carrier of the hepatitis B or C virus (viruses that affect the liver) the virus may become active while you use XELJANZ Your healthcare provider may do blood tests before you start treatment with XELJANZ and while you are using XELJANZ Tell your healthcare provider if you have any of the following symptoms of a possible hepatitis B or C infection

o feel very tired o fevers o skin or eyes look yellow o chills o little or no appetite o stomach discomfort o vomiting o muscle aches o clay-colored bowel o dark urine

movements o skin rash

31

Reference ID 3213422

Common side effects of XELJANZ include upper respiratory tract infections (common cold sinus infections) headache diarrhea nasal congestion sore throat and runny nose (nasopharyngitis)

Tell your healthcare provider if you have any side effect that bothers you or that does not go away

These are not all the possible side effects of XELJANZ For more information ask your healthcare provider or pharmacist

Call your doctor for medical advice about side effects You may report side effects to FDA at 1-800-FDA-1088

You may also report side effects to Pfizer at 1-800-438-1985

How should I store XELJANZ

Store XELJANZ at 68degF to 77degF (room temperature)

Safely throw away medicine that is out of date or no longer needed

Keep XELJANZ and all medicines out of the reach of children

General information about the safe and effective use of XELJANZ

Medicines are sometimes prescribed for purposes other than those listed in a Medication Guide Do not use XELJANZ for a condition for which it was not prescribed Do not give XELJANZ to other people even if they have the same symptoms you have It may harm them

This Medication Guide summarizes the most important information about XELJANZ If you would like more information talk to your healthcare provider You can ask your pharmacist or healthcare provider for information about XELJANZ that is written for health professionals

What are the ingredients in XELJANZ

Active ingredient tofacitinib citrate

Inactive ingredients microcrystalline cellulose lactose monohydrate croscarmellose sodium magnesium stearate HPMC 2910Hypromellose 6cP titanium dioxide macrogolPEG3350 and triacetin

32

Reference ID 3213422

This Medication Guide has been approved by the US Food and Drug Administration

LAB-0535-10 Issued November 2012

33

Reference ID 3213422

Table 6 Proportion of Patients with DAS28-4(ESR) Less Than 26 with Number of Residual Active Joints Study IV DAS28-4(ESR) Less Than 26 Placebo + MTX

160

XELJANZ 5 mg Twice Daily + MTX

321

XELJANZ 10 mg Twice Daily + MTX

316 Proportion of responders at Month 6 (n) 1 (2) 6 (19) 13 (42)

Of responders proportion with 0 active joints (n)

50 (1) 42 (8) 36 (15)

Of responders proportion with 1 active joint (n) 0 5 (1) 17 (7) Of responders proportion with 2 active joints (n)

0 32 (6) 7 (3)

Of responders proportion with 3 or more active joints (n)

50 (1) 21 (4) 40 (17)

The results of the components of the ACR response criteria for Study IV are shown in Table 7 Similar results were observed in Studies I II III and V

Table 7 Components of ACR Response at 3 Months Study IV

XELJANZ

5 mg

Twice Daily + MTX

N=321

XELJANZ

10 mg

Twice Daily + MTX

N=316

Placebo + MTX

N=160

Component (mean) a Baseline Month 3a Baseline Month 3a Baseline Month 3a

Number of tender

joints 24 13 23 10 23 18

(0-68) (14) (14) (15) (12) (13) (14)

Number of swollen

joints 14 6 14 6 14 10

(0-66) (8) (8) (8) (7) (9) (9)

Painb 58

(23)

34

(23)

58

(24)

29

(22)

55

(24)

47

(24)

Patient global

assessmentb

58

(24)

35

(23)

57

(23)

29

(20)

54

(23)

47

(24)

Disability index

(HAQ-DI)c 141 099 140 084 132 119

(068) (065) (066) (064) (067) (068)

25

Reference ID 3213422

Physician global

assessmentb 59 30 58 24 56 43

(16) (19) (17) (17) (18) (22)

CRP (mgL) 153 71 171 44 137 146

(190) (191) (269) (86) (149) (187) aData shown is mean (Standard Deviation) at Month 3bVisual analog scale 0 = best 100 = worst cHealth Assessment Questionnaire Disability Index 0 = best 3 = worst 20 questions categories dressing and grooming arising eating walking hygiene reach grip and activities

The percent of ACR20 responders by visit for Study IV is shown in Figure 5 Similar responses were observed in Studies I II III and V

Figure 5 Percentage of ACR20 Responders by Visit for Study IV

Physical Function Response Improvement in physical functioning was measured by the HAQ-DI Patients receiving XELJANZ 5 and 10 mg twice daily demonstrated greater improvement from baseline in physical functioning compared to placebo at Month 3

The mean (95 CI) difference from placebo in HAQ-DI improvement from baseline at Month 3 in Study III was -022 (-035 -010) in patients receiving 5 mg XELJANZ twice daily and -032 (-044 -019) in patients receiving 10 mg XELJANZ twice daily Similar results were obtained in

26

Reference ID 3213422

Studies I II IV and V In the 12-month trials HAQ-DI results in XELJANZ-treated patients were consistent at 6 and 12 months

16 HOW SUPPLIEDSTORAGE AND HANDLING XELJANZ is provided as 5 mg tofacitinib (equivalent to 8 mg tofacitinib citrate) tablets White round immediate-release film-coated tablets debossed with ldquoPfizerrdquo on one side and ldquoJKI 5rdquo on the other side and available in

Bottles of 60 NDC 0069-1001-01 Bottles of 180 NDC 0069-1001-02

Storage and Handling Store at 20degC to 25degC (68degF to 77degF) [See USP Controlled Room Temperature]

Do not repackage

17 PATIENT COUNSELING INFORMATION See FDA-approved patient labeling (Medication Guide)

Inform patients of the availability of a Medication Guide and instruct them to read the Medication Guide prior to taking XELJANZ Instruct patients to take XELJANZ only as prescribed

This productrsquos label may have been updated For current full prescribing information please visit wwwpfizercom

LAB-0445-10

27

Reference ID 3213422

MEDICATION GUIDE

XELJANZ (ZELrsquo JANSrsquo) (tofacitinib)

Read this Medication Guide before you start taking XELJANZ and each time you get a refill There may be new information This Medication Guide does not take the place of talking to your healthcare provider about your medical condition or treatment

What is the most important information I should know about XELJANZ XELJANZ may cause serious side effects including

1 Serious infections

XELJANZ is a medicine that affects your immune system XELJANZ can lower the ability of your immune system to fight infections Some people have serious infections while taking XELJANZ including tuberculosis (TB) and infections caused by bacteria fungi or viruses that can spread throughout the body Some people have died from these infections Your healthcare provider should test you for TB before starting XELJANZ Your healthcare provider should monitor you closely for signs and symptoms of

TB infection during treatment with XELJANZ

You should not start taking XELJANZ if you have any kind of infection unless your healthcare provider tells you it is okay

Before starting XELJANZ tell your healthcare provider if you think you have an infection or have symptoms of an infection such as

o fever sweating or chills o warm red or painful skin o muscle aches or sores on your body o cough o diarrhea or stomach pain o shortness of breath o burning when you urinate o blood in phlegm or urinating more often o weight loss than normal

o feeling very tired are being treated for an infection get a lot of infections or have infections that keep coming back have diabetes HIV or a weak immune system People with these conditions

have a higher chance for infections have TB or have been in close contact with someone with TB live or have lived or have traveled to certain parts of the country (such as the

Ohio and Mississippi River valleys and the Southwest) where there is an increased chance for getting certain kinds of fungal infections (histoplasmosis coccidioidomycosis or blastomycosis) These infections may happen or become more severe if you use XELJANZ Ask your healthcare provider if you do not know if you have lived in an area where these infections are common

have or have had hepatitis B or C

28

Reference ID 3213422

After starting XELJANZ call your healthcare provider right away if you have any symptoms of an infection XELJANZ can make you more likely to get infections or make worse any infection that you have

2 Cancer and immune system problems

XELJANZ may increase your risk of certain cancers by changing the way your immune system works

Lymphoma and other cancers can happen in patients taking XELJANZ Tell your healthcare provider if you have ever had any type of cancer

Some people who have taken XELJANZ with certain other medicines to prevent kidney transplant rejection have had a problem with certain white blood cells growing out of control (Epstein Barr Virus-associated post transplant lymphoproliferative disorder)

3 Tears (perforation) in the stomach or intestines

Tell your healthcare provider if you have had diverticulitis (inflammation in parts of the large intestine) or ulcers in your stomach or intestines Some people taking XELJANZ get tears in their stomach or intestine This happens most often in people who also take nonsteroidal anti-inflammatory drugs (NSAIDs) corticosteroids or methotrexate

Tell your healthcare provider right away if you have fever and stomach-area pain that does not go away and a change in your bowel habits

4 Changes in certain laboratory test results Your healthcare provider should do blood tests before you start receiving XELJANZ and while you take XELJANZ to check for the following side effects

changes in lymphocyte counts Lymphocytes are white blood cells that help the body fight off infections

low neutrophil counts Neutrophils are white blood cells that help the body fight off infections

low red blood cell count This may mean that you have anemia which may make you feel weak and tired

Your healthcare provider should routinely check certain liver tests

You should not receive XELJANZ if your lymphocyte count neutrophil count or red blood cell count is too low or your liver tests are too high

Your healthcare provider may stop your XELJANZ treatment for a period of time if needed because of changes in these blood test results

29

Reference ID 3213422

You may also have changes in other laboratory tests such as your blood cholesterol levels Your healthcare provider should do blood tests to check your cholesterol levels 4 to 8 weeks after you start receiving XELJANZ and as needed after that Normal cholesterol levels are important to good heart health

See ldquoWhat are the possible side effects of XELJANZrdquo for more information about side effects

What is XELJANZ

XELJANZ is a prescription medicine called a Janus kinase (JAK) inhibitor XELJANZ is used to treat adults with moderately to severely active rheumatoid arthritis in which methotrexate did not work well

It is not known if XELJANZ is safe and effective in people with Hepatitis B or C

XELJANZ is not for people with severe liver problems

It is not known if XELJANZ is safe and effective in children

What should I tell my healthcare provider before taking XELJANZ

XELJANZ may not be right for you Before taking XELJANZ tell your healthcare provider if you have an infection See ldquoWhat is the most important information I should know

about XELJANZrdquo have liver problems have kidney problems have any stomach area (abdominal) pain or been diagnosed with diverticulitis or

ulcers in your stomach or intestines have had a reaction to tofacitinib or any of the ingredients in XELJANZ have recently received or are scheduled to receive a vaccine People who take

XELJANZ should not receive live vaccines People taking XELJANZ can receive non-live vaccines

have any other medical conditions plan to become pregnant or are pregnant It is not known if XELJANZ will harm

an unborn baby

Pregnancy Registry Pfizer has a registry for pregnant women who take XELJANZ The purpose of this registry is to check the health of the pregnant mother and her baby If you are pregnant or become pregnant while taking XELJANZ talk to your healthcare provider about how you can join this pregnancy registry or you may contact the registry at 1-877-311-8972 to enroll

plan to breastfeed or are breastfeeding You and your healthcare provider should decide if you will take XELJANZ or breastfeed You should not do both

30

Reference ID 3213422

Tell your healthcare provider about all the medicines you take including prescription and non-prescription medicines vitamins and herbal supplements XELJANZ and other medicines may affect each other causing side effects

Especially tell your healthcare provider if you take any other medicines to treat your rheumatoid arthritis You should not take

tocilizumab (Actemrareg) etanercept (Enbrelreg) adalimumab (Humirareg) infliximab (Remicadereg) rituximab (Rituxanreg) abatacept (Orenciareg) anakinra (Kineretreg) certolizumab (Cimziareg) golimumab (Simponireg) azathioprine cyclosporine or other immunosuppressive drugs while you are taking XELJANZ Taking XELJANZ with these medicines may increase your risk of infection

medicines that affect the way certain liver enzymes work Ask your healthcare provider if you are not sure if your medicine is one of these

Know the medicines you take Keep a list of them to show your healthcare provider and pharmacist when you get a new medicine

How should I take XELJANZ

Take XELJANZ as your healthcare provider tells you to take it

Take XELJANZ 2 times a day with or without food

If you take too much XELJANZ call your healthcare provider or go the nearest hospital emergency room right away

What are possible side effects of XELJANZ

XELJANZ may cause serious side effects including

See ldquoWhat is the most important information I should know about XELJANZrdquo

Hepatitis B or C activation infection in people who carry the virus in their blood If you are a carrier of the hepatitis B or C virus (viruses that affect the liver) the virus may become active while you use XELJANZ Your healthcare provider may do blood tests before you start treatment with XELJANZ and while you are using XELJANZ Tell your healthcare provider if you have any of the following symptoms of a possible hepatitis B or C infection

o feel very tired o fevers o skin or eyes look yellow o chills o little or no appetite o stomach discomfort o vomiting o muscle aches o clay-colored bowel o dark urine

movements o skin rash

31

Reference ID 3213422

Common side effects of XELJANZ include upper respiratory tract infections (common cold sinus infections) headache diarrhea nasal congestion sore throat and runny nose (nasopharyngitis)

Tell your healthcare provider if you have any side effect that bothers you or that does not go away

These are not all the possible side effects of XELJANZ For more information ask your healthcare provider or pharmacist

Call your doctor for medical advice about side effects You may report side effects to FDA at 1-800-FDA-1088

You may also report side effects to Pfizer at 1-800-438-1985

How should I store XELJANZ

Store XELJANZ at 68degF to 77degF (room temperature)

Safely throw away medicine that is out of date or no longer needed

Keep XELJANZ and all medicines out of the reach of children

General information about the safe and effective use of XELJANZ

Medicines are sometimes prescribed for purposes other than those listed in a Medication Guide Do not use XELJANZ for a condition for which it was not prescribed Do not give XELJANZ to other people even if they have the same symptoms you have It may harm them

This Medication Guide summarizes the most important information about XELJANZ If you would like more information talk to your healthcare provider You can ask your pharmacist or healthcare provider for information about XELJANZ that is written for health professionals

What are the ingredients in XELJANZ

Active ingredient tofacitinib citrate

Inactive ingredients microcrystalline cellulose lactose monohydrate croscarmellose sodium magnesium stearate HPMC 2910Hypromellose 6cP titanium dioxide macrogolPEG3350 and triacetin

32

Reference ID 3213422

This Medication Guide has been approved by the US Food and Drug Administration

LAB-0535-10 Issued November 2012

33

Reference ID 3213422

Physician global

assessmentb 59 30 58 24 56 43

(16) (19) (17) (17) (18) (22)

CRP (mgL) 153 71 171 44 137 146

(190) (191) (269) (86) (149) (187) aData shown is mean (Standard Deviation) at Month 3bVisual analog scale 0 = best 100 = worst cHealth Assessment Questionnaire Disability Index 0 = best 3 = worst 20 questions categories dressing and grooming arising eating walking hygiene reach grip and activities

The percent of ACR20 responders by visit for Study IV is shown in Figure 5 Similar responses were observed in Studies I II III and V

Figure 5 Percentage of ACR20 Responders by Visit for Study IV

Physical Function Response Improvement in physical functioning was measured by the HAQ-DI Patients receiving XELJANZ 5 and 10 mg twice daily demonstrated greater improvement from baseline in physical functioning compared to placebo at Month 3

The mean (95 CI) difference from placebo in HAQ-DI improvement from baseline at Month 3 in Study III was -022 (-035 -010) in patients receiving 5 mg XELJANZ twice daily and -032 (-044 -019) in patients receiving 10 mg XELJANZ twice daily Similar results were obtained in

26

Reference ID 3213422

Studies I II IV and V In the 12-month trials HAQ-DI results in XELJANZ-treated patients were consistent at 6 and 12 months

16 HOW SUPPLIEDSTORAGE AND HANDLING XELJANZ is provided as 5 mg tofacitinib (equivalent to 8 mg tofacitinib citrate) tablets White round immediate-release film-coated tablets debossed with ldquoPfizerrdquo on one side and ldquoJKI 5rdquo on the other side and available in

Bottles of 60 NDC 0069-1001-01 Bottles of 180 NDC 0069-1001-02

Storage and Handling Store at 20degC to 25degC (68degF to 77degF) [See USP Controlled Room Temperature]

Do not repackage

17 PATIENT COUNSELING INFORMATION See FDA-approved patient labeling (Medication Guide)

Inform patients of the availability of a Medication Guide and instruct them to read the Medication Guide prior to taking XELJANZ Instruct patients to take XELJANZ only as prescribed

This productrsquos label may have been updated For current full prescribing information please visit wwwpfizercom

LAB-0445-10

27

Reference ID 3213422

MEDICATION GUIDE

XELJANZ (ZELrsquo JANSrsquo) (tofacitinib)

Read this Medication Guide before you start taking XELJANZ and each time you get a refill There may be new information This Medication Guide does not take the place of talking to your healthcare provider about your medical condition or treatment

What is the most important information I should know about XELJANZ XELJANZ may cause serious side effects including

1 Serious infections

XELJANZ is a medicine that affects your immune system XELJANZ can lower the ability of your immune system to fight infections Some people have serious infections while taking XELJANZ including tuberculosis (TB) and infections caused by bacteria fungi or viruses that can spread throughout the body Some people have died from these infections Your healthcare provider should test you for TB before starting XELJANZ Your healthcare provider should monitor you closely for signs and symptoms of

TB infection during treatment with XELJANZ

You should not start taking XELJANZ if you have any kind of infection unless your healthcare provider tells you it is okay

Before starting XELJANZ tell your healthcare provider if you think you have an infection or have symptoms of an infection such as

o fever sweating or chills o warm red or painful skin o muscle aches or sores on your body o cough o diarrhea or stomach pain o shortness of breath o burning when you urinate o blood in phlegm or urinating more often o weight loss than normal

o feeling very tired are being treated for an infection get a lot of infections or have infections that keep coming back have diabetes HIV or a weak immune system People with these conditions

have a higher chance for infections have TB or have been in close contact with someone with TB live or have lived or have traveled to certain parts of the country (such as the

Ohio and Mississippi River valleys and the Southwest) where there is an increased chance for getting certain kinds of fungal infections (histoplasmosis coccidioidomycosis or blastomycosis) These infections may happen or become more severe if you use XELJANZ Ask your healthcare provider if you do not know if you have lived in an area where these infections are common

have or have had hepatitis B or C

28

Reference ID 3213422

After starting XELJANZ call your healthcare provider right away if you have any symptoms of an infection XELJANZ can make you more likely to get infections or make worse any infection that you have

2 Cancer and immune system problems

XELJANZ may increase your risk of certain cancers by changing the way your immune system works

Lymphoma and other cancers can happen in patients taking XELJANZ Tell your healthcare provider if you have ever had any type of cancer

Some people who have taken XELJANZ with certain other medicines to prevent kidney transplant rejection have had a problem with certain white blood cells growing out of control (Epstein Barr Virus-associated post transplant lymphoproliferative disorder)

3 Tears (perforation) in the stomach or intestines

Tell your healthcare provider if you have had diverticulitis (inflammation in parts of the large intestine) or ulcers in your stomach or intestines Some people taking XELJANZ get tears in their stomach or intestine This happens most often in people who also take nonsteroidal anti-inflammatory drugs (NSAIDs) corticosteroids or methotrexate

Tell your healthcare provider right away if you have fever and stomach-area pain that does not go away and a change in your bowel habits

4 Changes in certain laboratory test results Your healthcare provider should do blood tests before you start receiving XELJANZ and while you take XELJANZ to check for the following side effects

changes in lymphocyte counts Lymphocytes are white blood cells that help the body fight off infections

low neutrophil counts Neutrophils are white blood cells that help the body fight off infections

low red blood cell count This may mean that you have anemia which may make you feel weak and tired

Your healthcare provider should routinely check certain liver tests

You should not receive XELJANZ if your lymphocyte count neutrophil count or red blood cell count is too low or your liver tests are too high

Your healthcare provider may stop your XELJANZ treatment for a period of time if needed because of changes in these blood test results

29

Reference ID 3213422

You may also have changes in other laboratory tests such as your blood cholesterol levels Your healthcare provider should do blood tests to check your cholesterol levels 4 to 8 weeks after you start receiving XELJANZ and as needed after that Normal cholesterol levels are important to good heart health

See ldquoWhat are the possible side effects of XELJANZrdquo for more information about side effects

What is XELJANZ

XELJANZ is a prescription medicine called a Janus kinase (JAK) inhibitor XELJANZ is used to treat adults with moderately to severely active rheumatoid arthritis in which methotrexate did not work well

It is not known if XELJANZ is safe and effective in people with Hepatitis B or C

XELJANZ is not for people with severe liver problems

It is not known if XELJANZ is safe and effective in children

What should I tell my healthcare provider before taking XELJANZ

XELJANZ may not be right for you Before taking XELJANZ tell your healthcare provider if you have an infection See ldquoWhat is the most important information I should know

about XELJANZrdquo have liver problems have kidney problems have any stomach area (abdominal) pain or been diagnosed with diverticulitis or

ulcers in your stomach or intestines have had a reaction to tofacitinib or any of the ingredients in XELJANZ have recently received or are scheduled to receive a vaccine People who take

XELJANZ should not receive live vaccines People taking XELJANZ can receive non-live vaccines

have any other medical conditions plan to become pregnant or are pregnant It is not known if XELJANZ will harm

an unborn baby

Pregnancy Registry Pfizer has a registry for pregnant women who take XELJANZ The purpose of this registry is to check the health of the pregnant mother and her baby If you are pregnant or become pregnant while taking XELJANZ talk to your healthcare provider about how you can join this pregnancy registry or you may contact the registry at 1-877-311-8972 to enroll

plan to breastfeed or are breastfeeding You and your healthcare provider should decide if you will take XELJANZ or breastfeed You should not do both

30

Reference ID 3213422

Tell your healthcare provider about all the medicines you take including prescription and non-prescription medicines vitamins and herbal supplements XELJANZ and other medicines may affect each other causing side effects

Especially tell your healthcare provider if you take any other medicines to treat your rheumatoid arthritis You should not take

tocilizumab (Actemrareg) etanercept (Enbrelreg) adalimumab (Humirareg) infliximab (Remicadereg) rituximab (Rituxanreg) abatacept (Orenciareg) anakinra (Kineretreg) certolizumab (Cimziareg) golimumab (Simponireg) azathioprine cyclosporine or other immunosuppressive drugs while you are taking XELJANZ Taking XELJANZ with these medicines may increase your risk of infection

medicines that affect the way certain liver enzymes work Ask your healthcare provider if you are not sure if your medicine is one of these

Know the medicines you take Keep a list of them to show your healthcare provider and pharmacist when you get a new medicine

How should I take XELJANZ

Take XELJANZ as your healthcare provider tells you to take it

Take XELJANZ 2 times a day with or without food

If you take too much XELJANZ call your healthcare provider or go the nearest hospital emergency room right away

What are possible side effects of XELJANZ

XELJANZ may cause serious side effects including

See ldquoWhat is the most important information I should know about XELJANZrdquo

Hepatitis B or C activation infection in people who carry the virus in their blood If you are a carrier of the hepatitis B or C virus (viruses that affect the liver) the virus may become active while you use XELJANZ Your healthcare provider may do blood tests before you start treatment with XELJANZ and while you are using XELJANZ Tell your healthcare provider if you have any of the following symptoms of a possible hepatitis B or C infection

o feel very tired o fevers o skin or eyes look yellow o chills o little or no appetite o stomach discomfort o vomiting o muscle aches o clay-colored bowel o dark urine

movements o skin rash

31

Reference ID 3213422

Common side effects of XELJANZ include upper respiratory tract infections (common cold sinus infections) headache diarrhea nasal congestion sore throat and runny nose (nasopharyngitis)

Tell your healthcare provider if you have any side effect that bothers you or that does not go away

These are not all the possible side effects of XELJANZ For more information ask your healthcare provider or pharmacist

Call your doctor for medical advice about side effects You may report side effects to FDA at 1-800-FDA-1088

You may also report side effects to Pfizer at 1-800-438-1985

How should I store XELJANZ

Store XELJANZ at 68degF to 77degF (room temperature)

Safely throw away medicine that is out of date or no longer needed

Keep XELJANZ and all medicines out of the reach of children

General information about the safe and effective use of XELJANZ

Medicines are sometimes prescribed for purposes other than those listed in a Medication Guide Do not use XELJANZ for a condition for which it was not prescribed Do not give XELJANZ to other people even if they have the same symptoms you have It may harm them

This Medication Guide summarizes the most important information about XELJANZ If you would like more information talk to your healthcare provider You can ask your pharmacist or healthcare provider for information about XELJANZ that is written for health professionals

What are the ingredients in XELJANZ

Active ingredient tofacitinib citrate

Inactive ingredients microcrystalline cellulose lactose monohydrate croscarmellose sodium magnesium stearate HPMC 2910Hypromellose 6cP titanium dioxide macrogolPEG3350 and triacetin

32

Reference ID 3213422

This Medication Guide has been approved by the US Food and Drug Administration

LAB-0535-10 Issued November 2012

33

Reference ID 3213422

Studies I II IV and V In the 12-month trials HAQ-DI results in XELJANZ-treated patients were consistent at 6 and 12 months

16 HOW SUPPLIEDSTORAGE AND HANDLING XELJANZ is provided as 5 mg tofacitinib (equivalent to 8 mg tofacitinib citrate) tablets White round immediate-release film-coated tablets debossed with ldquoPfizerrdquo on one side and ldquoJKI 5rdquo on the other side and available in

Bottles of 60 NDC 0069-1001-01 Bottles of 180 NDC 0069-1001-02

Storage and Handling Store at 20degC to 25degC (68degF to 77degF) [See USP Controlled Room Temperature]

Do not repackage

17 PATIENT COUNSELING INFORMATION See FDA-approved patient labeling (Medication Guide)

Inform patients of the availability of a Medication Guide and instruct them to read the Medication Guide prior to taking XELJANZ Instruct patients to take XELJANZ only as prescribed

This productrsquos label may have been updated For current full prescribing information please visit wwwpfizercom

LAB-0445-10

27

Reference ID 3213422

MEDICATION GUIDE

XELJANZ (ZELrsquo JANSrsquo) (tofacitinib)

Read this Medication Guide before you start taking XELJANZ and each time you get a refill There may be new information This Medication Guide does not take the place of talking to your healthcare provider about your medical condition or treatment

What is the most important information I should know about XELJANZ XELJANZ may cause serious side effects including

1 Serious infections

XELJANZ is a medicine that affects your immune system XELJANZ can lower the ability of your immune system to fight infections Some people have serious infections while taking XELJANZ including tuberculosis (TB) and infections caused by bacteria fungi or viruses that can spread throughout the body Some people have died from these infections Your healthcare provider should test you for TB before starting XELJANZ Your healthcare provider should monitor you closely for signs and symptoms of

TB infection during treatment with XELJANZ

You should not start taking XELJANZ if you have any kind of infection unless your healthcare provider tells you it is okay

Before starting XELJANZ tell your healthcare provider if you think you have an infection or have symptoms of an infection such as

o fever sweating or chills o warm red or painful skin o muscle aches or sores on your body o cough o diarrhea or stomach pain o shortness of breath o burning when you urinate o blood in phlegm or urinating more often o weight loss than normal

o feeling very tired are being treated for an infection get a lot of infections or have infections that keep coming back have diabetes HIV or a weak immune system People with these conditions

have a higher chance for infections have TB or have been in close contact with someone with TB live or have lived or have traveled to certain parts of the country (such as the

Ohio and Mississippi River valleys and the Southwest) where there is an increased chance for getting certain kinds of fungal infections (histoplasmosis coccidioidomycosis or blastomycosis) These infections may happen or become more severe if you use XELJANZ Ask your healthcare provider if you do not know if you have lived in an area where these infections are common

have or have had hepatitis B or C

28

Reference ID 3213422

After starting XELJANZ call your healthcare provider right away if you have any symptoms of an infection XELJANZ can make you more likely to get infections or make worse any infection that you have

2 Cancer and immune system problems

XELJANZ may increase your risk of certain cancers by changing the way your immune system works

Lymphoma and other cancers can happen in patients taking XELJANZ Tell your healthcare provider if you have ever had any type of cancer

Some people who have taken XELJANZ with certain other medicines to prevent kidney transplant rejection have had a problem with certain white blood cells growing out of control (Epstein Barr Virus-associated post transplant lymphoproliferative disorder)

3 Tears (perforation) in the stomach or intestines

Tell your healthcare provider if you have had diverticulitis (inflammation in parts of the large intestine) or ulcers in your stomach or intestines Some people taking XELJANZ get tears in their stomach or intestine This happens most often in people who also take nonsteroidal anti-inflammatory drugs (NSAIDs) corticosteroids or methotrexate

Tell your healthcare provider right away if you have fever and stomach-area pain that does not go away and a change in your bowel habits

4 Changes in certain laboratory test results Your healthcare provider should do blood tests before you start receiving XELJANZ and while you take XELJANZ to check for the following side effects

changes in lymphocyte counts Lymphocytes are white blood cells that help the body fight off infections

low neutrophil counts Neutrophils are white blood cells that help the body fight off infections

low red blood cell count This may mean that you have anemia which may make you feel weak and tired

Your healthcare provider should routinely check certain liver tests

You should not receive XELJANZ if your lymphocyte count neutrophil count or red blood cell count is too low or your liver tests are too high

Your healthcare provider may stop your XELJANZ treatment for a period of time if needed because of changes in these blood test results

29

Reference ID 3213422

You may also have changes in other laboratory tests such as your blood cholesterol levels Your healthcare provider should do blood tests to check your cholesterol levels 4 to 8 weeks after you start receiving XELJANZ and as needed after that Normal cholesterol levels are important to good heart health

See ldquoWhat are the possible side effects of XELJANZrdquo for more information about side effects

What is XELJANZ

XELJANZ is a prescription medicine called a Janus kinase (JAK) inhibitor XELJANZ is used to treat adults with moderately to severely active rheumatoid arthritis in which methotrexate did not work well

It is not known if XELJANZ is safe and effective in people with Hepatitis B or C

XELJANZ is not for people with severe liver problems

It is not known if XELJANZ is safe and effective in children

What should I tell my healthcare provider before taking XELJANZ

XELJANZ may not be right for you Before taking XELJANZ tell your healthcare provider if you have an infection See ldquoWhat is the most important information I should know

about XELJANZrdquo have liver problems have kidney problems have any stomach area (abdominal) pain or been diagnosed with diverticulitis or

ulcers in your stomach or intestines have had a reaction to tofacitinib or any of the ingredients in XELJANZ have recently received or are scheduled to receive a vaccine People who take

XELJANZ should not receive live vaccines People taking XELJANZ can receive non-live vaccines

have any other medical conditions plan to become pregnant or are pregnant It is not known if XELJANZ will harm

an unborn baby

Pregnancy Registry Pfizer has a registry for pregnant women who take XELJANZ The purpose of this registry is to check the health of the pregnant mother and her baby If you are pregnant or become pregnant while taking XELJANZ talk to your healthcare provider about how you can join this pregnancy registry or you may contact the registry at 1-877-311-8972 to enroll

plan to breastfeed or are breastfeeding You and your healthcare provider should decide if you will take XELJANZ or breastfeed You should not do both

30

Reference ID 3213422

Tell your healthcare provider about all the medicines you take including prescription and non-prescription medicines vitamins and herbal supplements XELJANZ and other medicines may affect each other causing side effects

Especially tell your healthcare provider if you take any other medicines to treat your rheumatoid arthritis You should not take

tocilizumab (Actemrareg) etanercept (Enbrelreg) adalimumab (Humirareg) infliximab (Remicadereg) rituximab (Rituxanreg) abatacept (Orenciareg) anakinra (Kineretreg) certolizumab (Cimziareg) golimumab (Simponireg) azathioprine cyclosporine or other immunosuppressive drugs while you are taking XELJANZ Taking XELJANZ with these medicines may increase your risk of infection

medicines that affect the way certain liver enzymes work Ask your healthcare provider if you are not sure if your medicine is one of these

Know the medicines you take Keep a list of them to show your healthcare provider and pharmacist when you get a new medicine

How should I take XELJANZ

Take XELJANZ as your healthcare provider tells you to take it

Take XELJANZ 2 times a day with or without food

If you take too much XELJANZ call your healthcare provider or go the nearest hospital emergency room right away

What are possible side effects of XELJANZ

XELJANZ may cause serious side effects including

See ldquoWhat is the most important information I should know about XELJANZrdquo

Hepatitis B or C activation infection in people who carry the virus in their blood If you are a carrier of the hepatitis B or C virus (viruses that affect the liver) the virus may become active while you use XELJANZ Your healthcare provider may do blood tests before you start treatment with XELJANZ and while you are using XELJANZ Tell your healthcare provider if you have any of the following symptoms of a possible hepatitis B or C infection

o feel very tired o fevers o skin or eyes look yellow o chills o little or no appetite o stomach discomfort o vomiting o muscle aches o clay-colored bowel o dark urine

movements o skin rash

31

Reference ID 3213422

Common side effects of XELJANZ include upper respiratory tract infections (common cold sinus infections) headache diarrhea nasal congestion sore throat and runny nose (nasopharyngitis)

Tell your healthcare provider if you have any side effect that bothers you or that does not go away

These are not all the possible side effects of XELJANZ For more information ask your healthcare provider or pharmacist

Call your doctor for medical advice about side effects You may report side effects to FDA at 1-800-FDA-1088

You may also report side effects to Pfizer at 1-800-438-1985

How should I store XELJANZ

Store XELJANZ at 68degF to 77degF (room temperature)

Safely throw away medicine that is out of date or no longer needed

Keep XELJANZ and all medicines out of the reach of children

General information about the safe and effective use of XELJANZ

Medicines are sometimes prescribed for purposes other than those listed in a Medication Guide Do not use XELJANZ for a condition for which it was not prescribed Do not give XELJANZ to other people even if they have the same symptoms you have It may harm them

This Medication Guide summarizes the most important information about XELJANZ If you would like more information talk to your healthcare provider You can ask your pharmacist or healthcare provider for information about XELJANZ that is written for health professionals

What are the ingredients in XELJANZ

Active ingredient tofacitinib citrate

Inactive ingredients microcrystalline cellulose lactose monohydrate croscarmellose sodium magnesium stearate HPMC 2910Hypromellose 6cP titanium dioxide macrogolPEG3350 and triacetin

32

Reference ID 3213422

This Medication Guide has been approved by the US Food and Drug Administration

LAB-0535-10 Issued November 2012

33

Reference ID 3213422

MEDICATION GUIDE

XELJANZ (ZELrsquo JANSrsquo) (tofacitinib)

Read this Medication Guide before you start taking XELJANZ and each time you get a refill There may be new information This Medication Guide does not take the place of talking to your healthcare provider about your medical condition or treatment

What is the most important information I should know about XELJANZ XELJANZ may cause serious side effects including

1 Serious infections

XELJANZ is a medicine that affects your immune system XELJANZ can lower the ability of your immune system to fight infections Some people have serious infections while taking XELJANZ including tuberculosis (TB) and infections caused by bacteria fungi or viruses that can spread throughout the body Some people have died from these infections Your healthcare provider should test you for TB before starting XELJANZ Your healthcare provider should monitor you closely for signs and symptoms of

TB infection during treatment with XELJANZ

You should not start taking XELJANZ if you have any kind of infection unless your healthcare provider tells you it is okay

Before starting XELJANZ tell your healthcare provider if you think you have an infection or have symptoms of an infection such as

o fever sweating or chills o warm red or painful skin o muscle aches or sores on your body o cough o diarrhea or stomach pain o shortness of breath o burning when you urinate o blood in phlegm or urinating more often o weight loss than normal

o feeling very tired are being treated for an infection get a lot of infections or have infections that keep coming back have diabetes HIV or a weak immune system People with these conditions

have a higher chance for infections have TB or have been in close contact with someone with TB live or have lived or have traveled to certain parts of the country (such as the

Ohio and Mississippi River valleys and the Southwest) where there is an increased chance for getting certain kinds of fungal infections (histoplasmosis coccidioidomycosis or blastomycosis) These infections may happen or become more severe if you use XELJANZ Ask your healthcare provider if you do not know if you have lived in an area where these infections are common

have or have had hepatitis B or C

28

Reference ID 3213422

After starting XELJANZ call your healthcare provider right away if you have any symptoms of an infection XELJANZ can make you more likely to get infections or make worse any infection that you have

2 Cancer and immune system problems

XELJANZ may increase your risk of certain cancers by changing the way your immune system works

Lymphoma and other cancers can happen in patients taking XELJANZ Tell your healthcare provider if you have ever had any type of cancer

Some people who have taken XELJANZ with certain other medicines to prevent kidney transplant rejection have had a problem with certain white blood cells growing out of control (Epstein Barr Virus-associated post transplant lymphoproliferative disorder)

3 Tears (perforation) in the stomach or intestines

Tell your healthcare provider if you have had diverticulitis (inflammation in parts of the large intestine) or ulcers in your stomach or intestines Some people taking XELJANZ get tears in their stomach or intestine This happens most often in people who also take nonsteroidal anti-inflammatory drugs (NSAIDs) corticosteroids or methotrexate

Tell your healthcare provider right away if you have fever and stomach-area pain that does not go away and a change in your bowel habits

4 Changes in certain laboratory test results Your healthcare provider should do blood tests before you start receiving XELJANZ and while you take XELJANZ to check for the following side effects

changes in lymphocyte counts Lymphocytes are white blood cells that help the body fight off infections

low neutrophil counts Neutrophils are white blood cells that help the body fight off infections

low red blood cell count This may mean that you have anemia which may make you feel weak and tired

Your healthcare provider should routinely check certain liver tests

You should not receive XELJANZ if your lymphocyte count neutrophil count or red blood cell count is too low or your liver tests are too high

Your healthcare provider may stop your XELJANZ treatment for a period of time if needed because of changes in these blood test results

29

Reference ID 3213422

You may also have changes in other laboratory tests such as your blood cholesterol levels Your healthcare provider should do blood tests to check your cholesterol levels 4 to 8 weeks after you start receiving XELJANZ and as needed after that Normal cholesterol levels are important to good heart health

See ldquoWhat are the possible side effects of XELJANZrdquo for more information about side effects

What is XELJANZ

XELJANZ is a prescription medicine called a Janus kinase (JAK) inhibitor XELJANZ is used to treat adults with moderately to severely active rheumatoid arthritis in which methotrexate did not work well

It is not known if XELJANZ is safe and effective in people with Hepatitis B or C

XELJANZ is not for people with severe liver problems

It is not known if XELJANZ is safe and effective in children

What should I tell my healthcare provider before taking XELJANZ

XELJANZ may not be right for you Before taking XELJANZ tell your healthcare provider if you have an infection See ldquoWhat is the most important information I should know

about XELJANZrdquo have liver problems have kidney problems have any stomach area (abdominal) pain or been diagnosed with diverticulitis or

ulcers in your stomach or intestines have had a reaction to tofacitinib or any of the ingredients in XELJANZ have recently received or are scheduled to receive a vaccine People who take

XELJANZ should not receive live vaccines People taking XELJANZ can receive non-live vaccines

have any other medical conditions plan to become pregnant or are pregnant It is not known if XELJANZ will harm

an unborn baby

Pregnancy Registry Pfizer has a registry for pregnant women who take XELJANZ The purpose of this registry is to check the health of the pregnant mother and her baby If you are pregnant or become pregnant while taking XELJANZ talk to your healthcare provider about how you can join this pregnancy registry or you may contact the registry at 1-877-311-8972 to enroll

plan to breastfeed or are breastfeeding You and your healthcare provider should decide if you will take XELJANZ or breastfeed You should not do both

30

Reference ID 3213422

Tell your healthcare provider about all the medicines you take including prescription and non-prescription medicines vitamins and herbal supplements XELJANZ and other medicines may affect each other causing side effects

Especially tell your healthcare provider if you take any other medicines to treat your rheumatoid arthritis You should not take

tocilizumab (Actemrareg) etanercept (Enbrelreg) adalimumab (Humirareg) infliximab (Remicadereg) rituximab (Rituxanreg) abatacept (Orenciareg) anakinra (Kineretreg) certolizumab (Cimziareg) golimumab (Simponireg) azathioprine cyclosporine or other immunosuppressive drugs while you are taking XELJANZ Taking XELJANZ with these medicines may increase your risk of infection

medicines that affect the way certain liver enzymes work Ask your healthcare provider if you are not sure if your medicine is one of these

Know the medicines you take Keep a list of them to show your healthcare provider and pharmacist when you get a new medicine

How should I take XELJANZ

Take XELJANZ as your healthcare provider tells you to take it

Take XELJANZ 2 times a day with or without food

If you take too much XELJANZ call your healthcare provider or go the nearest hospital emergency room right away

What are possible side effects of XELJANZ

XELJANZ may cause serious side effects including

See ldquoWhat is the most important information I should know about XELJANZrdquo

Hepatitis B or C activation infection in people who carry the virus in their blood If you are a carrier of the hepatitis B or C virus (viruses that affect the liver) the virus may become active while you use XELJANZ Your healthcare provider may do blood tests before you start treatment with XELJANZ and while you are using XELJANZ Tell your healthcare provider if you have any of the following symptoms of a possible hepatitis B or C infection

o feel very tired o fevers o skin or eyes look yellow o chills o little or no appetite o stomach discomfort o vomiting o muscle aches o clay-colored bowel o dark urine

movements o skin rash

31

Reference ID 3213422

Common side effects of XELJANZ include upper respiratory tract infections (common cold sinus infections) headache diarrhea nasal congestion sore throat and runny nose (nasopharyngitis)

Tell your healthcare provider if you have any side effect that bothers you or that does not go away

These are not all the possible side effects of XELJANZ For more information ask your healthcare provider or pharmacist

Call your doctor for medical advice about side effects You may report side effects to FDA at 1-800-FDA-1088

You may also report side effects to Pfizer at 1-800-438-1985

How should I store XELJANZ

Store XELJANZ at 68degF to 77degF (room temperature)

Safely throw away medicine that is out of date or no longer needed

Keep XELJANZ and all medicines out of the reach of children

General information about the safe and effective use of XELJANZ

Medicines are sometimes prescribed for purposes other than those listed in a Medication Guide Do not use XELJANZ for a condition for which it was not prescribed Do not give XELJANZ to other people even if they have the same symptoms you have It may harm them

This Medication Guide summarizes the most important information about XELJANZ If you would like more information talk to your healthcare provider You can ask your pharmacist or healthcare provider for information about XELJANZ that is written for health professionals

What are the ingredients in XELJANZ

Active ingredient tofacitinib citrate

Inactive ingredients microcrystalline cellulose lactose monohydrate croscarmellose sodium magnesium stearate HPMC 2910Hypromellose 6cP titanium dioxide macrogolPEG3350 and triacetin

32

Reference ID 3213422

This Medication Guide has been approved by the US Food and Drug Administration

LAB-0535-10 Issued November 2012

33

Reference ID 3213422

After starting XELJANZ call your healthcare provider right away if you have any symptoms of an infection XELJANZ can make you more likely to get infections or make worse any infection that you have

2 Cancer and immune system problems

XELJANZ may increase your risk of certain cancers by changing the way your immune system works

Lymphoma and other cancers can happen in patients taking XELJANZ Tell your healthcare provider if you have ever had any type of cancer

Some people who have taken XELJANZ with certain other medicines to prevent kidney transplant rejection have had a problem with certain white blood cells growing out of control (Epstein Barr Virus-associated post transplant lymphoproliferative disorder)

3 Tears (perforation) in the stomach or intestines

Tell your healthcare provider if you have had diverticulitis (inflammation in parts of the large intestine) or ulcers in your stomach or intestines Some people taking XELJANZ get tears in their stomach or intestine This happens most often in people who also take nonsteroidal anti-inflammatory drugs (NSAIDs) corticosteroids or methotrexate

Tell your healthcare provider right away if you have fever and stomach-area pain that does not go away and a change in your bowel habits

4 Changes in certain laboratory test results Your healthcare provider should do blood tests before you start receiving XELJANZ and while you take XELJANZ to check for the following side effects

changes in lymphocyte counts Lymphocytes are white blood cells that help the body fight off infections

low neutrophil counts Neutrophils are white blood cells that help the body fight off infections

low red blood cell count This may mean that you have anemia which may make you feel weak and tired

Your healthcare provider should routinely check certain liver tests

You should not receive XELJANZ if your lymphocyte count neutrophil count or red blood cell count is too low or your liver tests are too high

Your healthcare provider may stop your XELJANZ treatment for a period of time if needed because of changes in these blood test results

29

Reference ID 3213422

You may also have changes in other laboratory tests such as your blood cholesterol levels Your healthcare provider should do blood tests to check your cholesterol levels 4 to 8 weeks after you start receiving XELJANZ and as needed after that Normal cholesterol levels are important to good heart health

See ldquoWhat are the possible side effects of XELJANZrdquo for more information about side effects

What is XELJANZ

XELJANZ is a prescription medicine called a Janus kinase (JAK) inhibitor XELJANZ is used to treat adults with moderately to severely active rheumatoid arthritis in which methotrexate did not work well

It is not known if XELJANZ is safe and effective in people with Hepatitis B or C

XELJANZ is not for people with severe liver problems

It is not known if XELJANZ is safe and effective in children

What should I tell my healthcare provider before taking XELJANZ

XELJANZ may not be right for you Before taking XELJANZ tell your healthcare provider if you have an infection See ldquoWhat is the most important information I should know

about XELJANZrdquo have liver problems have kidney problems have any stomach area (abdominal) pain or been diagnosed with diverticulitis or

ulcers in your stomach or intestines have had a reaction to tofacitinib or any of the ingredients in XELJANZ have recently received or are scheduled to receive a vaccine People who take

XELJANZ should not receive live vaccines People taking XELJANZ can receive non-live vaccines

have any other medical conditions plan to become pregnant or are pregnant It is not known if XELJANZ will harm

an unborn baby

Pregnancy Registry Pfizer has a registry for pregnant women who take XELJANZ The purpose of this registry is to check the health of the pregnant mother and her baby If you are pregnant or become pregnant while taking XELJANZ talk to your healthcare provider about how you can join this pregnancy registry or you may contact the registry at 1-877-311-8972 to enroll

plan to breastfeed or are breastfeeding You and your healthcare provider should decide if you will take XELJANZ or breastfeed You should not do both

30

Reference ID 3213422

Tell your healthcare provider about all the medicines you take including prescription and non-prescription medicines vitamins and herbal supplements XELJANZ and other medicines may affect each other causing side effects

Especially tell your healthcare provider if you take any other medicines to treat your rheumatoid arthritis You should not take

tocilizumab (Actemrareg) etanercept (Enbrelreg) adalimumab (Humirareg) infliximab (Remicadereg) rituximab (Rituxanreg) abatacept (Orenciareg) anakinra (Kineretreg) certolizumab (Cimziareg) golimumab (Simponireg) azathioprine cyclosporine or other immunosuppressive drugs while you are taking XELJANZ Taking XELJANZ with these medicines may increase your risk of infection

medicines that affect the way certain liver enzymes work Ask your healthcare provider if you are not sure if your medicine is one of these

Know the medicines you take Keep a list of them to show your healthcare provider and pharmacist when you get a new medicine

How should I take XELJANZ

Take XELJANZ as your healthcare provider tells you to take it

Take XELJANZ 2 times a day with or without food

If you take too much XELJANZ call your healthcare provider or go the nearest hospital emergency room right away

What are possible side effects of XELJANZ

XELJANZ may cause serious side effects including

See ldquoWhat is the most important information I should know about XELJANZrdquo

Hepatitis B or C activation infection in people who carry the virus in their blood If you are a carrier of the hepatitis B or C virus (viruses that affect the liver) the virus may become active while you use XELJANZ Your healthcare provider may do blood tests before you start treatment with XELJANZ and while you are using XELJANZ Tell your healthcare provider if you have any of the following symptoms of a possible hepatitis B or C infection

o feel very tired o fevers o skin or eyes look yellow o chills o little or no appetite o stomach discomfort o vomiting o muscle aches o clay-colored bowel o dark urine

movements o skin rash

31

Reference ID 3213422

Common side effects of XELJANZ include upper respiratory tract infections (common cold sinus infections) headache diarrhea nasal congestion sore throat and runny nose (nasopharyngitis)

Tell your healthcare provider if you have any side effect that bothers you or that does not go away

These are not all the possible side effects of XELJANZ For more information ask your healthcare provider or pharmacist

Call your doctor for medical advice about side effects You may report side effects to FDA at 1-800-FDA-1088

You may also report side effects to Pfizer at 1-800-438-1985

How should I store XELJANZ

Store XELJANZ at 68degF to 77degF (room temperature)

Safely throw away medicine that is out of date or no longer needed

Keep XELJANZ and all medicines out of the reach of children

General information about the safe and effective use of XELJANZ

Medicines are sometimes prescribed for purposes other than those listed in a Medication Guide Do not use XELJANZ for a condition for which it was not prescribed Do not give XELJANZ to other people even if they have the same symptoms you have It may harm them

This Medication Guide summarizes the most important information about XELJANZ If you would like more information talk to your healthcare provider You can ask your pharmacist or healthcare provider for information about XELJANZ that is written for health professionals

What are the ingredients in XELJANZ

Active ingredient tofacitinib citrate

Inactive ingredients microcrystalline cellulose lactose monohydrate croscarmellose sodium magnesium stearate HPMC 2910Hypromellose 6cP titanium dioxide macrogolPEG3350 and triacetin

32

Reference ID 3213422

This Medication Guide has been approved by the US Food and Drug Administration

LAB-0535-10 Issued November 2012

33

Reference ID 3213422

You may also have changes in other laboratory tests such as your blood cholesterol levels Your healthcare provider should do blood tests to check your cholesterol levels 4 to 8 weeks after you start receiving XELJANZ and as needed after that Normal cholesterol levels are important to good heart health

See ldquoWhat are the possible side effects of XELJANZrdquo for more information about side effects

What is XELJANZ

XELJANZ is a prescription medicine called a Janus kinase (JAK) inhibitor XELJANZ is used to treat adults with moderately to severely active rheumatoid arthritis in which methotrexate did not work well

It is not known if XELJANZ is safe and effective in people with Hepatitis B or C

XELJANZ is not for people with severe liver problems

It is not known if XELJANZ is safe and effective in children

What should I tell my healthcare provider before taking XELJANZ

XELJANZ may not be right for you Before taking XELJANZ tell your healthcare provider if you have an infection See ldquoWhat is the most important information I should know

about XELJANZrdquo have liver problems have kidney problems have any stomach area (abdominal) pain or been diagnosed with diverticulitis or

ulcers in your stomach or intestines have had a reaction to tofacitinib or any of the ingredients in XELJANZ have recently received or are scheduled to receive a vaccine People who take

XELJANZ should not receive live vaccines People taking XELJANZ can receive non-live vaccines

have any other medical conditions plan to become pregnant or are pregnant It is not known if XELJANZ will harm

an unborn baby

Pregnancy Registry Pfizer has a registry for pregnant women who take XELJANZ The purpose of this registry is to check the health of the pregnant mother and her baby If you are pregnant or become pregnant while taking XELJANZ talk to your healthcare provider about how you can join this pregnancy registry or you may contact the registry at 1-877-311-8972 to enroll

plan to breastfeed or are breastfeeding You and your healthcare provider should decide if you will take XELJANZ or breastfeed You should not do both

30

Reference ID 3213422

Tell your healthcare provider about all the medicines you take including prescription and non-prescription medicines vitamins and herbal supplements XELJANZ and other medicines may affect each other causing side effects

Especially tell your healthcare provider if you take any other medicines to treat your rheumatoid arthritis You should not take

tocilizumab (Actemrareg) etanercept (Enbrelreg) adalimumab (Humirareg) infliximab (Remicadereg) rituximab (Rituxanreg) abatacept (Orenciareg) anakinra (Kineretreg) certolizumab (Cimziareg) golimumab (Simponireg) azathioprine cyclosporine or other immunosuppressive drugs while you are taking XELJANZ Taking XELJANZ with these medicines may increase your risk of infection

medicines that affect the way certain liver enzymes work Ask your healthcare provider if you are not sure if your medicine is one of these

Know the medicines you take Keep a list of them to show your healthcare provider and pharmacist when you get a new medicine

How should I take XELJANZ

Take XELJANZ as your healthcare provider tells you to take it

Take XELJANZ 2 times a day with or without food

If you take too much XELJANZ call your healthcare provider or go the nearest hospital emergency room right away

What are possible side effects of XELJANZ

XELJANZ may cause serious side effects including

See ldquoWhat is the most important information I should know about XELJANZrdquo

Hepatitis B or C activation infection in people who carry the virus in their blood If you are a carrier of the hepatitis B or C virus (viruses that affect the liver) the virus may become active while you use XELJANZ Your healthcare provider may do blood tests before you start treatment with XELJANZ and while you are using XELJANZ Tell your healthcare provider if you have any of the following symptoms of a possible hepatitis B or C infection

o feel very tired o fevers o skin or eyes look yellow o chills o little or no appetite o stomach discomfort o vomiting o muscle aches o clay-colored bowel o dark urine

movements o skin rash

31

Reference ID 3213422

Common side effects of XELJANZ include upper respiratory tract infections (common cold sinus infections) headache diarrhea nasal congestion sore throat and runny nose (nasopharyngitis)

Tell your healthcare provider if you have any side effect that bothers you or that does not go away

These are not all the possible side effects of XELJANZ For more information ask your healthcare provider or pharmacist

Call your doctor for medical advice about side effects You may report side effects to FDA at 1-800-FDA-1088

You may also report side effects to Pfizer at 1-800-438-1985

How should I store XELJANZ

Store XELJANZ at 68degF to 77degF (room temperature)

Safely throw away medicine that is out of date or no longer needed

Keep XELJANZ and all medicines out of the reach of children

General information about the safe and effective use of XELJANZ

Medicines are sometimes prescribed for purposes other than those listed in a Medication Guide Do not use XELJANZ for a condition for which it was not prescribed Do not give XELJANZ to other people even if they have the same symptoms you have It may harm them

This Medication Guide summarizes the most important information about XELJANZ If you would like more information talk to your healthcare provider You can ask your pharmacist or healthcare provider for information about XELJANZ that is written for health professionals

What are the ingredients in XELJANZ

Active ingredient tofacitinib citrate

Inactive ingredients microcrystalline cellulose lactose monohydrate croscarmellose sodium magnesium stearate HPMC 2910Hypromellose 6cP titanium dioxide macrogolPEG3350 and triacetin

32

Reference ID 3213422

This Medication Guide has been approved by the US Food and Drug Administration

LAB-0535-10 Issued November 2012

33

Reference ID 3213422

Tell your healthcare provider about all the medicines you take including prescription and non-prescription medicines vitamins and herbal supplements XELJANZ and other medicines may affect each other causing side effects

Especially tell your healthcare provider if you take any other medicines to treat your rheumatoid arthritis You should not take

tocilizumab (Actemrareg) etanercept (Enbrelreg) adalimumab (Humirareg) infliximab (Remicadereg) rituximab (Rituxanreg) abatacept (Orenciareg) anakinra (Kineretreg) certolizumab (Cimziareg) golimumab (Simponireg) azathioprine cyclosporine or other immunosuppressive drugs while you are taking XELJANZ Taking XELJANZ with these medicines may increase your risk of infection

medicines that affect the way certain liver enzymes work Ask your healthcare provider if you are not sure if your medicine is one of these

Know the medicines you take Keep a list of them to show your healthcare provider and pharmacist when you get a new medicine

How should I take XELJANZ

Take XELJANZ as your healthcare provider tells you to take it

Take XELJANZ 2 times a day with or without food

If you take too much XELJANZ call your healthcare provider or go the nearest hospital emergency room right away

What are possible side effects of XELJANZ

XELJANZ may cause serious side effects including

See ldquoWhat is the most important information I should know about XELJANZrdquo

Hepatitis B or C activation infection in people who carry the virus in their blood If you are a carrier of the hepatitis B or C virus (viruses that affect the liver) the virus may become active while you use XELJANZ Your healthcare provider may do blood tests before you start treatment with XELJANZ and while you are using XELJANZ Tell your healthcare provider if you have any of the following symptoms of a possible hepatitis B or C infection

o feel very tired o fevers o skin or eyes look yellow o chills o little or no appetite o stomach discomfort o vomiting o muscle aches o clay-colored bowel o dark urine

movements o skin rash

31

Reference ID 3213422

Common side effects of XELJANZ include upper respiratory tract infections (common cold sinus infections) headache diarrhea nasal congestion sore throat and runny nose (nasopharyngitis)

Tell your healthcare provider if you have any side effect that bothers you or that does not go away

These are not all the possible side effects of XELJANZ For more information ask your healthcare provider or pharmacist

Call your doctor for medical advice about side effects You may report side effects to FDA at 1-800-FDA-1088

You may also report side effects to Pfizer at 1-800-438-1985

How should I store XELJANZ

Store XELJANZ at 68degF to 77degF (room temperature)

Safely throw away medicine that is out of date or no longer needed

Keep XELJANZ and all medicines out of the reach of children

General information about the safe and effective use of XELJANZ

Medicines are sometimes prescribed for purposes other than those listed in a Medication Guide Do not use XELJANZ for a condition for which it was not prescribed Do not give XELJANZ to other people even if they have the same symptoms you have It may harm them

This Medication Guide summarizes the most important information about XELJANZ If you would like more information talk to your healthcare provider You can ask your pharmacist or healthcare provider for information about XELJANZ that is written for health professionals

What are the ingredients in XELJANZ

Active ingredient tofacitinib citrate

Inactive ingredients microcrystalline cellulose lactose monohydrate croscarmellose sodium magnesium stearate HPMC 2910Hypromellose 6cP titanium dioxide macrogolPEG3350 and triacetin

32

Reference ID 3213422

This Medication Guide has been approved by the US Food and Drug Administration

LAB-0535-10 Issued November 2012

33

Reference ID 3213422

Common side effects of XELJANZ include upper respiratory tract infections (common cold sinus infections) headache diarrhea nasal congestion sore throat and runny nose (nasopharyngitis)

Tell your healthcare provider if you have any side effect that bothers you or that does not go away

These are not all the possible side effects of XELJANZ For more information ask your healthcare provider or pharmacist

Call your doctor for medical advice about side effects You may report side effects to FDA at 1-800-FDA-1088

You may also report side effects to Pfizer at 1-800-438-1985

How should I store XELJANZ

Store XELJANZ at 68degF to 77degF (room temperature)

Safely throw away medicine that is out of date or no longer needed

Keep XELJANZ and all medicines out of the reach of children

General information about the safe and effective use of XELJANZ

Medicines are sometimes prescribed for purposes other than those listed in a Medication Guide Do not use XELJANZ for a condition for which it was not prescribed Do not give XELJANZ to other people even if they have the same symptoms you have It may harm them

This Medication Guide summarizes the most important information about XELJANZ If you would like more information talk to your healthcare provider You can ask your pharmacist or healthcare provider for information about XELJANZ that is written for health professionals

What are the ingredients in XELJANZ

Active ingredient tofacitinib citrate

Inactive ingredients microcrystalline cellulose lactose monohydrate croscarmellose sodium magnesium stearate HPMC 2910Hypromellose 6cP titanium dioxide macrogolPEG3350 and triacetin

32

Reference ID 3213422

This Medication Guide has been approved by the US Food and Drug Administration

LAB-0535-10 Issued November 2012

33

Reference ID 3213422

This Medication Guide has been approved by the US Food and Drug Administration

LAB-0535-10 Issued November 2012

33

Reference ID 3213422